The

rodent Rodents (from Latin , 'to gnaw') are mammals of the Order (biology), order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are roden ...

subfamily Sigmodontinae includes New World

rat Rats are various medium-sized, long-tailed rodents. Species of rats are found throughout the order Rodentia, but stereotypical rats are found in the genus ''Rattus''. Other rat genera include '' Neotoma'' ( pack rats), '' Bandicota'' (bandico ...

s and

mice A mouse ( : mice) is a small rodent. Characteristically, mice are known to have a pointed snout, small rounded ears, a body-length scaly tail, and a high breeding rate. The best known mouse species is the common house mouse (''Mus musculus' ...

, with at least 376 species. Many authorities include the

Neotominae The Neotominae are a subfamily of the family Cricetidae. They consist of four tribes, 16 genera, and many species of New World rats and mice, predominantly found in North America. Among them are the well-known deer mice, white-footed mice, pac ...

and

Tylomyinae The subfamily Tylomyinae consists of several species of New World rats and mice including the vesper and climbing rats. They are not as well known as their relatives in the subfamilies Sigmodontinae and Neotominae. Many authorities place all t ...

as part of a larger definition of Sigmodontinae. When those genera are included, the species count numbers at least 508. Their distribution includes much of the

New World The term ''New World'' is often used to mean the majority of Earth's Western Hemisphere, specifically the Americas."America." ''The Oxford Companion to the English Language'' (). McArthur, Tom, ed., 1992. New York: Oxford University Press, p. ...

, but the genera are predominantly

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the souther ...

n, such as brucies. They invaded South America from Central America as part of the

Great American Interchange The Great American Biotic Interchange (commonly abbreviated as GABI), also known as the Great American Interchange and the Great American Faunal Interchange, was an important late Cenozoic paleozoogeographic biotic interchange event in which la ...

near the end of the Miocene, about 5 million years ago. Sigmodontines proceeded to diversify explosively in the formerly isolated continent. They inhabit many of the same

ecological niche In ecology, a niche is the match of a species to a specific environmental condition. Three variants of ecological niche are described by It describes how an organism or population responds to the distribution of resources and competitors (fo ...

s that the

Murinae The Old World rats and mice, part of the subfamily Murinae in the family Muridae, comprise at least 519 species. Members of this subfamily are called murines. In terms of species richness, this subfamily is larger than all mammal families ex ...

occupy in the

Old World The "Old World" is a term for Afro-Eurasia that originated in Europe , after Europeans became aware of the existence of the Americas. It is used to contrast the continents of Africa, Europe, and Asia, which were previously thought of by th ...

. The "Thomasomyini" from the Atlantic Forest of

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

are generally thought to be not especially related to the "real" Thomasomyini from the northern

Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...

and the Amazon rainforest. The genera ''

Wiedomys ''Wiedomys'' is a genus of South American rodents in the family Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World rats and mice. ...

'' and '' Sigmodon'' are generally placed in their own tribe, and the "phyllotines" ''

Irenomys ''Irenomys tarsalis'', also known as the Chilean climbing mouse, Chilean tree mouse, or long-footed irenomys,Musser and Carleton, 2005, p. 1121 is a rodent found in Chile, from about 36° to 46°S, and in adjacent Argentina, mainly in forests. ...

'', ''

Punomys ''Punomys'' is a genus of rodent in the family Cricetidae. It contains the following species: * Eastern puna mouse The eastern puna mouse (''Punomys kofordi'') is a species of rodent in the family Cricetidae. It is endemic to southern Peru ...

'', ''

Euneomys ''Euneomys'' is a genus of rodent in the family Cricetidae. It contains the following species: * Patagonian chinchilla mouse (''Euneomys chinchilloides'') * Burrowing chinchilla mouse (''Euneomys fossor'') * Biting chinchilla mouse (''Euneomys ...

'', and ''

Reithrodon ''Reithrodon'' is a genus of rodent in the family Cricetidae. It contains the following living species: * Bunny rat (''Reithrodon auritus'') * Naked-soled conyrat The naked-soled conyrat (''Reithrodon typicus'') is a species of rodent in th ...

'' are considered ''incertae sedis''. The name "Sigmodontinae" is based on the name of the

type genus In biological taxonomy, the type genus is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearing type of a nomina ...

, ''Sigmodon''. This name in turn derives from the Greek roots for "S-tooth" ('' -'' for "S" and ''odont-'' for "tooth", as in orth''odont''ist) for the characteristic of the molars having an S-shape when viewed from above.

Species

The Sigmodontinae are divided into a number of tribes and genera: * Sigmodontalia **Tribe Sigmodontini ***Genus '' Prosigmodon'' **** ''Prosigmodon chihuahuensis'' **** ''Prosigmodon ferrusquiai'' **** ''Prosigmodon holocuspis'' **** ''Prosigmodon oroscoi'' **** ''Prosigmodon tecolotum'' ***Genus '' Sigmodon'' - cotton rats ****Subgenus '' Sigmodon'' *****''Sigmodon hispidus'' species group ******

Allen's cotton rat Allen's cotton rat (''Sigmodon alleni'') is a species of rodent in the family Cricetidae. It is endemic to western Mexico, where its distribution extends from Sinaloa to Oaxaca. The formerly recognized '' S. planifrons'' and '' S. vulcani'' are n ...

, ''Sigmodon alleni'' ****** Arizona cotton rat, ''Sigmodon arizonae'' ******

Southern cotton rat The southern cotton rat (''Sigmodon hirsutus'') is a rodent species in the family Cricetidae. It is found from southern Chiapas in Mexico through Central America, except for Belize, and as far east as northern Colombia and Venezuela. It lives in ...

, ''Sigmodon hirsutus'' ******

Hispid cotton rat The hispid cotton rat (''Sigmodon hispidus'') is a rodent species long thought to occur in parts of South America, Central America, and southern North America. However, recent taxonomic revisions, based on mitochondrial DNA sequence data, ha ...

, ''Sigmodon hispidus'' ******

Jaliscan cotton rat The Jaliscan cotton rat or Mexican cotton rat (''Sigmodon mascotensis'') is a species of rodent in the family Cricetidae. It is found only in Mexico. They commonly have brown fur with white fur on the belly. They are ground-dwelling and pref ...

, ''Sigmodon mascotensis'' ******

Yellow-nosed cotton rat The yellow-nosed cotton rat (''Sigmodon ochrognathus'') is a species of rodent in the family Cricetidae. It is native to Mexico and to the states of Arizona, New Mexico, and Texas in the United States, where it inhabits mountain grassland, scru ...

, ''Sigmodon ochrognathus'' ******

Miahuatlán cotton rat The Miahuatlán cotton rat (''Sigmodon planifrons'') was formerly considered a rodent species in the family Cricetidae. It is found only on the Pacific slope of the Sierra de Miahuatlán in the Mexican state of Oaxaca ) , population_note ...

, ''Sigmodon planifrons'' ****** Toltec cotton rat, ''Sigmodon toltecus'' ****** Montane cotton rat, ''Sigmodon zanjonensis'' *****''Sigmodon fulviventer'' species group ******

Tawny-bellied cotton rat The tawny-bellied cotton rat (''Sigmodon fulviventer'') is a species of rodent in the family Cricetidae. It is found in Mexico and in the US states of Arizona and New Mexico. Description Sexual dimorphism is not present, but the adult male ...

, ''Sigmodon fulviventer'' ******

Unexpected cotton rat The unexpected cotton rat (''Sigmodon inopinatus'') is a species of rodent in the family Cricetidae. It is found only in Ecuador at elevations of 3500 to 4000 m, where it has been found in association with streams and marshes. It is also kn ...

, ''Sigmodon inopinatus'' ****** White-eared cotton rat, ''Sigmodon leucotis'' ****** Peruvian cotton rat, ''Sigmodon peruanus'' ****Subgenus ''

Sigmomys Alston's cotton rat (''Sigmodon alstoni'') is a rodent species from South America. It is found in Brazil, Colombia, Guyana, Suriname Suriname (; srn, Sranankondre or ), officially the Republic of Suriname ( nl, Republiek Suriname , s ...

'' ***** Alston's cotton rat, ''Sigmodon alstoni'' **Tribe

Ichthyomyini Ichthyomyini is a tribe of New World rats and mice in the subfamily Sigmodontinae. The species within this tribe share the characteristics of all being carnivorous semiaquatic rodents. *''Anotomys'' - aquatic rat *''Chibchanomys ''Chibchanom ...

- fish- and crab-eating rats & water mice ***Genus ''

Anotomys The aquatic rat, Ecuador fish-eating rat, fish-eating rat or Ecuadoran ichthyomyine (''Anotomys leander'') is a South American species of semiaquatic rodent in the family Cricetidae. It is the only species in the genus ''Anotomys''. This species ...

'' - Ecuadorian fish-eating rat ****

Aquatic rat The aquatic rat, Ecuador fish-eating rat, fish-eating rat or Ecuadoran ichthyomyine (''Anotomys leander'') is a South American species of semiaquatic rodent in the family Cricetidae. It is the only species in the genus ''Anotomys''. This species ...

, ''Anotomys leander'' ***Genus ''

Chibchanomys ''Chibchanomys'' is a genus of rodent in the family Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World rats and mice. At ...

'' - water mice ****

Las Cajas water mouse The Las Cajas water mouse (''Chibchanomys orcesi'') is a species of rodent in the family Cricetidae. It is endemic to the Cajas National Park in Ecuador."Parque National Cajas", map and brochure from Etapa, Cuenca, 2009 Its natural habitat is th ...

, ''Chibchanomys orcesi'' ****

Chibchan water mouse The Chibchan water mouse (''Chibchanomys trichotis'') is a species of rodent in the family Cricetidae. It is found in the Andean highlands of Colombia, Peru, and Venezuela. Its natural habitats are tropical cloud forest A cloud forest, als ...

, ''Chibchanomys trichotis'' ***Genus '' Ichthyomys'' - crab-eating rats ****

Crab-eating rat The crab-eating rat (''Ichthyomys hydrobates'') is a species of semiaquatic rodent in the family Cricetidae. It is found in Colombia, Ecuador, and Venezuela. Its natural habitats are rivers and swamp A swamp is a forested wetland.Keddy, P.A. ...

, ''Ichthyomys hydrobates'' **** Pittier's crab-eating rat, ''Ichthyomys pittieri'' ****

Stolzmann's crab-eating rat Stolzmann's crab-eating rat (''Ichthyomys stolzmanni'') is a species of rodent in the family Cricetidae. It is found in Ecuador and Peru. The species is believed to be nocturnal and semiaquatic, and has been found at an elevation range of 900 to 1 ...

, ''Ichthyomys stolzmanni'' **** Tweedy's crab-eating rat, ''Ichthyomys tweedii'' ***Genus ''

Neusticomys ''Neusticomys'' is a genus of semiaquatic, animalivorous South American rodents in the family Cricetidae. The term ''Neusticomys'' derives from the two ancient greek words (), meaning "able to swim", and (), meaning "mouse, rat". ''N. montico ...

'' - fish-eating rats **** Ferreira's fish-eating rat, ''Neusticomys ferreirai'' ****

Montane fish-eating rat The montane fish-eating rat (''Neusticomys monticolus'') is a species of semiaquatic rodent in the family Cricetidae. It inhabits the Andes Mountains of Colombia and Ecuador. Description Montane fish-eating rats are moderately sized rodents, w ...

, ''Neusticomys monticolus'' ****

Musso's fish-eating rat Musso's fish-eating rat (''Neusticomys mussoi'') is a species of rodent in the family Cricetidae endemic to western Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezue ...

, ''Neusticomys mussoi'' **** Oyapock's fish-eating rat, ''Neusticomys oyapocki'' ****

Peruvian fish-eating rat The Peruvian fish-eating rat (''Neusticomys peruviensis'') is a species of semiaquatic rodent in the family Cricetidae. It is found only in eastern Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacio ...

, ''Neusticomys peruviensis'' **** Venezuelan fish-eating rat, ''Neusticomys venezuelae'' ***Genus ''

Rheomys ''Rheomys'' is a genus of Mexican and Central American semiaquatic rodents in the family Cricetidae. It contains the following species: * Mexican water mouse, ''Rheomys mexicanus The Mexican water mouse, Mexican fishing mouse or Goodwin's wa ...

'' - water mice ****

Mexican water mouse The Mexican water mouse, Mexican fishing mouse or Goodwin's water mouse (''Rheomys mexicanus''), is a species of semiaquatic rodent in the family Cricetidae. It has a restricted range in the state of Oaxaca in southern Mexico, Threatened by defo ...

, ''Rheomys mexicanus'' **** Goldman's water mouse, ''Rheomys raptor'' ****

Thomas's water mouse Thomas's water mouse (''Rheomys thomasi'') is a species of rodent in the family Cricetidae found in El Salvador, Guatemala Guatemala ( ; ), officially the Republic of Guatemala ( es, República de Guatemala, links=no), is a country in Ce ...

, ''Rheomys thomasi'' ****

Underwood's water mouse Underwood's water mouse (''Rheomys underwoodi'') is a species of rodent in the family Cricetidae. It is found in Costa Rican and western Panamanian cloud forest at altitudes from 1500 to 2000 m. This mouse lives near streams in highland forests a ...

, ''Rheomys underwoodi'' * Oryzomyalia **Tribe

Oryzomyini Oryzomyini is a tribe of rodents in the subfamily Sigmodontinae of the family Cricetidae. It includes about 120 species in about thirty genera,Weksler et al., 2006, table 1 distributed from the eastern United States to the southernmost parts of ...

- rice rats, marsh rats, bristly mice, cane mice ***Genus ''

Aegialomys ''Aegialomys'' is a genus of oryzomyine rodents from the lowlands and mountains of western Peru and Ecuador, including the Galápagos Islands. The species in this genus have historically been placed in ''Oryzomys'', but according to cladistic res ...

'' ****

Galápagos rice rat The Galápagos rice rat (''Aegialomys galapagoensis''), also known as the Galápagos oryzomys, is a species of rodent that is endemic to the Galápagos Islands. Description The Galapagos rice rat is a medium-sized rodent, with a head-body lengt ...

, ''Aegialomys galapagoensis'' ****

Yellowish rice rat ''Aegialomys xanthaeolus'', also known as the yellowish oryzomys or yellowish rice rat, is a species of rodent in the family Cricetidae. It belongs to the genus ''Aegialomys'' in tribe Oryzomyini, which was not recognized as distinct from ''Ory ...

, ''Aegialomys xanthaeolus'' ***Genus ''

Amphinectomys ''Amphinectomys savamis'', also known as the Ucayali water ratMusser and Carleton, 2005 or amphibious rat,Duff and Lawson, 2004 is a rodent from the Peruvian Amazon. It is placed as the only member of genus ''Amphinectomys'' in the tribe Oryzom ...

'' - Ucayali water rat **** Ucayali water rat, ''Amphinectomys savamis'' ***Genus ''

Cerradomys ''Cerradomys'' is a genus of oryzomyine rodents from eastern Bolivia, Paraguay, and central Brazil found in cerrado, Caatinga and Gran Chaco habitats. The species in this genus have historically been placed in ''Oryzomys'', but according to cla ...

'' ****''

Cerradomys langguthi ''Cerradomys langguthi'' is a species of rodent from South America in the genus '' Cerradomys''. It occurs only in northeastern Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest count ...

'' ****''

Cerradomys maracajuensis ''Cerradomys maracajuensis'', also known as the Maracaju oryzomys, is a rodent species from South America. It is terrestrial and is found in gallery forests in Bolivia, Paraguay and nearby Brazil and Peru , image_flag = Flag of ...

'' ****''

Cerradomys marinhus ''Cerradomys marinhus'', also known as Marinho's rice rat, is a rodent species from South America. It is found in Minas Gerais, Brazil. It was formerly known as ''Oryzomys marinhus'', but was transferred to the new genus ''Cerradomys ''Cerradom ...

'' ****

Lindbergh’s oryzomys ''Cerradomys scotti'', also known as Lindbergh's oryzomys, is a rodent species from South America in the genus ''Cerradomys''. It is terrestrial and is found in the cerrado (savanna) ecozone of south central Brazil, Bolivia and Paraguay. The speci ...

, ''Cerradomys scotti'' (including ''Oryzomys andersoni'') **** Terraced rice rat, ''Cerradomys subflavus'' ****''

Cerradomys vivoi ''Cerradomys vivoi'' is a species of rodent from South America in the genus ''Cerradomys''. It occurs only in eastern Brazil, in the states of Bahia, Goiás, and Sergipe Sergipe (), officially State of Sergipe, is a state of Brazil. Located i ...

'' ***Genus ''

Drymoreomys ''Drymoreomys'' is a rodent genus in the tribe Oryzomyini that lives in the Atlantic Forest of Brazil. The single species, ''D. albimaculatus'', is known only from the states of São Paulo and Santa Catarina and was not named until 2011. I ...

'' ****''

Drymoreomys albimaculatus ''Drymoreomys'' is a rodent genus in the tribe Oryzomyini that lives in the Atlantic Forest of Brazil. The single species, ''D. albimaculatus'', is known only from the states of São Paulo and Santa Catarina and was not named until 2011. ...

'' ***Genus ''

Eremoryzomys ''Eremoryzomys polius'', also known as the gray rice rat or the Marañon oryzomys,Musser and Carleton, 2005, p. 1153 is a rodent species in the tribe Oryzomyini of the family Cricetidae. Discovered in 1912 and first described in 1913 by Wil ...

'' ****

Grey rice rat ''Eremoryzomys polius'', also known as the gray rice rat or the Marañon oryzomys,Musser and Carleton, 2005, p. 1153 is a rodent species in the tribe Oryzomyini of the family Cricetidae. Discovered in 1912 and first described in 1913 by Wi ...

, ''Eremoryzomys polius'' ***Genus ''

Euryoryzomys ''Euryoryzomys'' is a genus of rodents in the tribe Oryzomyini of family Cricetidae. It includes six species, which are distributed in South America. Until 2006, its members were included in the genus ''Oryzomys'', but they are not closely rel ...

'' **** Emmons's rice rat, ''Euryoryzomys emmonsae'' ****

Monster rice rat ''Euryoryzomys lamia'', also known as the buffy-sided oryzomysMusser and Carleton, 2005 or monster rice rat, is a species of rodent in the family Cricetidae. It is found only in central Brazil, where it lives in forest enclaves within the cerrado ...

, ''Euryoryzomys lamia'' **** Big-headed rice rat, ''Euryoryzomys legatus'' ****

MacConnell's rice rat ''Euryoryzomys macconnelli'', also known as MacConnell's rice rat or MacConnell's oryzomys, is a rodent species from South America. It is found in Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela, where it lives in ...

, ''Euryoryzomys macconnelli'' **** Elegant rice rat, ''Euryoryzomys nitidus'' ****

Russet rice rat ''Euryoryzomys russatus'', also known as the russet oryzomys, russet rice rat, or big-headed rice rat, is a species of rodent in the family Cricetidae. It is a member of the genus ''Euryoryzomys'', which was split off from ''Oryzomys'' in 2006. I ...

, ''Euryoryzomys russatus'' ***Genus ''

Handleyomys ''Handleyomys'' is a genus of Central and South American rodents in the tribe Oryzomyini of family Cricetidae. It was first described in 2002 to include two species from the Colombian Andes which were previously included in distinct and unr ...

'' ****

Alfaro's rice rat ''Handleyomys alfaroi'', also known as Alfaro's rice rat or Alfaro's oryzomys,Musser and Carleton, 2005 is a species of rodent in the genus ''Handleyomys'' of family Cricetidae. It is found in Belize, Colombia, Costa Rica, Ecuador, El Salvador, ...

, ''Handleyomys alfaroi'' ****

Chapman's rice rat ''Handleyomys chapmani'', also known as Chapman's oryzomys or Chapman's rice rat, is a species of rodent in the genus ''Handleyomys'' of family Cricetidae. It is found only in Mexico. It was previously placed in ''Oryzomys'' as ''Oryzomys chapm ...

, ''Handleyomys chapmani'' **** Dusky-footed Handley's mouse, ''Handleyomys fuscatus'' ****

Colombian rice rat The Colombian rice rat (''Handleyomys intectus''), also known as the white-footed Handley's mouse is a species of rodent in the family Cricetidae occurring only in Colombia. It was previously included in ''Oryzomys'', but closely resembles the ...

, ''Handleyomys intectus'' ****

Black-eared rice rat ''Handleyomys melanotis'', also known as the black-eared oryzomysMusser and Carleton, 2005 or black-eared rice rat, is a species of rodent in the genus ''Handleyomys ''Handleyomys'' is a genus of Central and South American rodents in the tr ...

, ''Handleyomys melanotis'' ****

Striped rice rat ''Handleyomys rhabdops'', also known as the highland oryzomysMusser and Carleton, 2005 or striped rice rat, is a species of rodent in the genus '' Handleyomys'' of family Cricetidae. It is nocturnal and is found in Guatemala Guatemala ( ...

, ''Handleyomys rhabdops'' ****

Long-nosed rice rat ''Handleyomys rostratus'', also known as the long-nosed oryzomys, long-nosed rice rat, or rusty rice rat is a species of rodent in the genus ''Handleyomys'' of family Cricetidae. It is found in Belize, El Salvador, Guatemala, Honduras, Mexico ...

, ''Handleyomys rostratus'' ****

Cloud forest rice rat ''Handleyomys saturatior'', also known as the cloud forest oryzomysMusser and Carleton, 2005 or cloud forest rice rat,Reid et al., 2008 is a species of rodent in the genus ''Handleyomys'' of family Cricetidae. It is found in Belize, El Salvador, ...

, ''Handleyomys saturatior'' ***Genus ''

Holochilus ''Holochilus'' is a genus of semiaquatic rodents in the tribe Oryzomyini of family Cricetidae,* sometimes called marsh rats. It contains five living species, '' H. brasiliensis'', '' H. chacarius'', '' H. nanus'', '' H. oxe'', and '' H. sciureus ...

'' - marsh rats ****

Web-footed marsh rat ''Holochilus brasiliensis'', also known as the Brazilian marsh ratMusser, G.G. and Carleton, M.D. 2005. Superfamily Muroidea. Pp. 894–1531 in Wilson, D.E. and Reeder, D.M. (eds.)Mammal Species of the World: a taxonomic and geographic refer ...

, ''Holochilus brasiliensis'' **** Chaco marsh rat, ''Holochilus chacarius'' ****

Amazonian marsh rat The Amazonian marsh rat (''Holochilus sciureus''), also known as the common marsh rat,Duff, A. and Lawson, A. 2004. ''Mammals of the World: A checklist''. Yale University Press, 312 pp. or simply the marsh rat, is a rodent species from South A ...

(or common marsh rat), ''Holochilus sciureus'' ***Genus ''

Hylaeamys ''Hylaeamys'' is a genus of South American oryzomyine rodents found principally in humid forested areas east of the Andes. The species in this genus have historically been placed in ''Oryzomys''. They are most closely related to ''Euryoryzomys'', ...

'' ****''

Hylaeamys acritus ''Hylaeamys acritus'', formerly ''Oryzomys acritus'', is an oryzomyine rodent of the family Cricetidae. The name is derived from the Greek word ακριτος 'confused, doubtful', because it could easily be confused with species such as ''H. meg ...

'' ****''

Hylaeamys laticeps ''Hylaeamys laticeps'', also known as the Atlantic Forest oryzomysMusser and Carleton, 2005 or the large-headed rice rat, is a species of rodent in the family Cricetidae. The rodent is endemic to the Atlantic Forest region of southeastern Bra ...

'' **** Large-headed rice rat, ''Hylaeamys megacephalus'' **** Sowbug rice rat, ''Hylaeamys oniscus'' ****'' Hylaeamys perenensis'' **** Tate's rice rat, ''Hylaeamys tatei'' ****

Yungas rice rat ''Hylaeamys yunganus'', also known as the Amazonian oryzomysMusser and Carleton, 2005 or Yungas rice rat, is a species of rodent in the genus '' Hylaeamys'' of family Cricetidae. It is found in lowland tropical rainforest throughout Amazonia, in ...

, ''Hylaeamys yunganus'' ***Genus ''

Lundomys ''Lundomys molitor'', also known as Lund's amphibious ratMusser and Carleton, 2005, p. 1124 or the greater marsh rat, is a semiaquatic rat species from southeastern South America. Its distribution is now restricted to Uruguay and nearby ...

'' - Lund's amphibious rat **** Lund's amphibious rat, ''Lundomys molitor'' ***Genus ''

Megalomys ''Megalomys'' is a genus of rodent in the family Cricetidae, part of the tribe Oryzomyini. The genus contains five large rodents from various Caribbean islands, of which two are known to have survived into modern times, but all of which are now e ...

'' † - giant rice rats ****

Barbuda giant rice-rat ''Megalomys audreyae'', known as the Barbudan (?) muskrat or the Barbuda giant rice rat, is an Extinction, extinct Oryzomyini, oryzomyine rodent from Barbuda in the Rodents of the Caribbean#Leeward Antilles, Lesser Antilles. Described on the basi ...

, ''Megalomys audreyae'' † ****''

Megalomys curazensis ''Megalomys curazensis'' is a species of rodent from the Late Pleistocene (400,000 to 130,000 years ago) of the island of Curaçao, off northwestern Venezuela. It is a member of the genus ''Megalomys'', which also includes species from other isla ...

'' † **** Antillean giant rice rat, ''Megalomys desmarestii'' † ****

Santa Lucian pilorie ''Megalomys luciae'', also known as the Saint Lucia pilorie or Saint Lucia giant rice-rat, as well as several variant spellings, is an extinct rodent that lived on the island of Saint Lucia in the eastern Caribbean. It was the size of a small ca ...

, ''Megalomys luciae'' † ***Genus ''

Melanomys ''Melanomys'' is a genus of rodent in the tribe Oryzomyini of family Cricetidae, which is distributed in northern South America and adjacent Central America Central America ( es, América Central or ) is a subregion of the Americas. Its ...

'' - dark rice rats ****

Dusky rice rat ''Melanomys caliginosus'', also known as the dusky melanomysMusser and Carleton, 2005 or dusky rice rat, is a species of rodent in the genus ''Melanomys'' of family Cricetidae. It is found from List of mammals of Central America, Central America, ...

, ''Melanomys caliginosus'' **** Robust dark rice rat, ''Melanomys robustulus'' **** Zuniga's dark rice rat, ''Melanomys zunigae'' ***Genus ''

Microakodontomys The transitional colilargo (''Microakodontomys transitorius'') also known as the intermediate lesser grass mouse, is a species of rodent in the tribe Oryzomyini known only from two individuals found in the Federal District of Brazil. Although de ...

'' - Brasilia's mouse **** Transitional colilargo, ''Microakodontomys transitorius'' ***Genus ''

Microryzomys ''Microryzomys'' is a genus of rodent in the tribe Oryzomyini of family Cricetidae. It is closely related to '' Oreoryzomys'', ''Oligoryzomys'', and ''Neacomys''.Weksler, 2006 It contains two species, both restricted to the Andes: '' M. altissimu ...

'' - small rice rats **** Highland small rice rat, ''Microryzomys altissimus'' ****

Forest small rice rat ''Microryzomys minutus'', also known as the montane colilargo or the forest small rice rat, is a species of rodent in the genus ''Microryzomys'' of family Cricetidae. It is found in Bolivia, Colombia, Ecuador, Peru, and Venezuela, but these popul ...

, ''Microryzomys minutus'' ***Genus ''

Mindomys ''Mindomys'' is a genus of Sigmodontinae, sigmodontine rodents in the family Cricetidae. It includes two species known only from Ecuador, Hammond's rice rat (''Mindomys hammondi'') and the Kutukú rat (''Mindomys kutuku''). See also * List of ma ...

'' ****

Hammond's rice rat ''Mindomys hammondi'', also known as Hammond's rice rat or Hammond's oryzomys,Musser and Carleton, 2005, p. 1149 is an endangered species of rodent in the tribe Oryzomyini of family Cricetidae. Formerly considered to be related with '' ...

, ''Mindomys hammondi'' ***Genus ''

Neacomys The genus ''Neacomys'', also known as bristly mice because of their spiny fur, includes several species of rodents in the tribe Oryzomyini of family Cricetidae. It is most closely related to ''Oligoryzomys'', '' Oreoryzomys'', and '' Microryzomys ...

'' - bristly mice ****

Dubost's bristly mouse ''Neacomys dubosti'', also known as Dubost's neacomysMusser and Carleton, 2005 or Dubost's bristly mouse, is a species of South American rodent in the genus ''Neacomys'' of family Cricetidae. It is found in French Guiana, southeastern Suriname and ...

, ''Neacomys dubosti'' ****

Guiana bristly mouse ''Neacomys guianae'', also known as the Guianan neacomysMusser and Carleton, 2005 or Guiana bristly mouse, is a nocturnal rodent species from South America. It is found in lowland tropical rainforests in northeastern Brazil, French Guiana, Guyan ...

, ''Neacomys guianae'' **** Small bristly mouse, ''Neacomys minutus'' ****

Musser's bristly mouse ''Neacomys musseri'', also known as Musser's neacomys or Musser's bristly mouse,Duff and Lawson, 2004 is a rodent species from South America. It is found in far western Brazil and southeastern Peru , image_flag = Flag of Peru.sv ...

, ''Neacomys musseri'' ****

Paracou bristly mouse ''Neacomys paracou'', also known as the Paracou neacomys or Paracou bristly mouse,Duff and Lawson, 2004 is a rodent species from South America in the genus '' Neacomys''. It is found in northern Brazil, French Guiana, Guyana, Suriname S ...

, ''Neacomys paracou'' ****

Painted bristly mouse ''Neacomys pictus'', also known as the painted neacomysMusser and Carleton, 2005 or painted bristly mouse, is a species of rodent in the genus '' Neacomys'' of family Cricetidae. It is found only in Panama. References *Musser, G.G. and Carle ...

, ''Neacomys pictus'' ****

Common bristly mouse ''Neacomys spinosus'', also known as the common neacomys, common bristly mouse,Duff, A.; Lawson, A. 2004 Mammals of the World: A checklist New Haven: A & C Black. . or bristly mouse, is a nocturnal rodent species from South America in the genu ...

, ''Neacomys spinosus'' ****

Narrow-footed bristly mouse ''Neacomys tenuipes'', also known as the narrow-footed neacomysMusser and Carleton, 2005 or narrow-footed bristly mouse, is found along the northern Andes from northwestern Venezuela through Colombia into Ecuador, in rainforest at elevations fr ...

, ''Neacomys tenuipes'' ***Genus ''

Nectomys ''Nectomys'' is a genus of rodent in the tribe Oryzomyini of family Cricetidae. Musser and Carleton, 2005. It is closely related to ''Amphinectomys'' and was formerly considered congeneric with '' Sigmodontomys''. It consists of five species, whic ...

'' - water rats ****

Western Amazonian nectomys ''Nectomys apicalis'', also known as the western Amazonian nectomys,Musser and Carleton, 2005 is a semiaquatic species of rodent in the genus '' Nectomys'' of family Cricetidae. It is found east of the Andes in Ecuador, Peru, and Bolivia, ea ...

, ''Nectomys apicalis'' **** Magdalena nectomys, ''Nectomys magdalenae'' **** Trinidad water rat, ''Nectomys palmipes'' ****

Amazonian nectomys ''Nectomys rattus'', the small-footed bristly mouse, Amazonian nectomys, Amazonian mouse,Musser and Carleton, 2005 or common water rat is a species of rodent in the genus ''Nectomys'' of family Cricetidae. It is found in Brazil, Colombia, French ...

, ''Nectomys rattus'' ****

South American water rat ''Nectomys squamipes'', also known as the Atlantic Forest nectomys, South American water rat, or scaly-footed water rat, is a semiaquatic insectivorous rodent species. It is from Argentina, Brazil, and Paraguay — found primarily near forest riv ...

, ''Nectomys squamipes'' ***Genus ''

Nephelomys ''Nephelomys'' is a genus of South American oryzomyine rodents found in the Andes from Bolivia to Venezuela, with a westward extension into the mountains of Costa Rica. Its generic name is derived from the Ancient Greek word ''nephelê'' "mist" ...

'' ****

Tomes's rice rat ''Nephelomys albigularis'', also known as the white-throated oryzomys or Tomes's rice rat, is a species of rodent in the genus ''Nephelomys'' of family Cricetidae. Described in 1860, it was the first ''Nephelomys'' species to be discovered. It w ...

, ''Nephelomys albigularis'' **** Ecuadorian rice rat, ''Nephelomys auriventer'' **** Caracol rice rat, ''Nephelomys caracolus'' ****''

Nephelomys childi ''Nephelomys childi'' is a species of rodent in the genus ''Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 The type locality is at Bogotá, Colombia, and the type locality of its junior synonym, ''oconnelli'', is at a place known a ...

'' ****

Boquete rice rat ''Nephelomys devius'', also known as the Talamancan oryzomys,Musser and Carleton, 2005 Boquete rice rat, Chiriqui rice rat,Goldman, 1918, p. 80 or montane rice rat, is a species of rodent in the genus ''Nephelomys'' of family Cricetidae.Weksler ...

, ''Nephelomys devius'' ****

Keays's rice rat ''Nephelomys keaysi'', also known as Keays's oryzomysMusser and Carleton, 2005, p. 1149 or Keays's rice rat, is a species of rodent in the genus '' Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 It is found from southeastern Peru to ...

, ''Nephelomys keaysi'' ****

Light-footed rice rat ''Nephelomys levipes'', also known as the nimble-footed oryzomysMusser and Carleton, 2005, p. 1150 or light-footed rice rat, is a species of rodent in the genus '' Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 It is found on the ea ...

, ''Nephelomys levipes'' ****''

Nephelomys meridensis ''Nephelomys meridensis'', also known as the Mérida oryzomys,Musser and Carleton, 2005, p. 1151 is a species of rodent in the genus ''Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 It is found in cloud forest in the Sierra Nevada ...

'' ****''

Nephelomys moerex ''Nephelomys moerex'' is a species of rodent in the genus ''Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 The type locality is at Mindo in western Ecuador, where it has been recorded together with three other rodents of the oryzo ...

'' ****''

Nephelomys nimbosus ''Nephelomys nimbosus'' is a species of rodent in the genus '' Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 Its type locality is at San Antonio on the northeastern slope of the Tungurahua in the Andes of Ecuador, at an altitude of ...

'' ****''

Nephelomys pectoralis ''Nephelomys pectoralis'' is a species of rodent in the genus ''Nephelomys'' of family Cricetidae. Its type locality is west of the city of Popayán, Cauca Department, Colombia, at an altitude of .Allen, 1912, p. 83 American zoologist Joel Asa ...

'' **** Mount Pirre rice rat, ''Nephelomys pirrensis'' ***Genus ''

Nesoryzomys ''Nesoryzomys'' is a genus of rodent in the tribe Oryzomyini of family Cricetidae, endemic to the Galápagos Islands. Five species have been described, with two of them considered extinct. Other rodents restricted to the Galápagos include '' M ...

'' - Galapagos mice ****

Darwin's Galápagos mouse ''Nesoryzomys darwini'', also known as Darwin's nesoryzomys or Darwin's Galápagos mouse, is a species of rodent in the genus ''Nesoryzomys'' that lived on Santa Cruz Island in the Galápagos Islands. It was probably nocturnal and inhabited burro ...

, ''Nesoryzomys darwini'' † ****

Fernandina rice rat ''Nesoryzomys fernandinae'', also known as the Fernandina nesoryzomys, Fernandina rice rat, or Fernandina Galápagos mouse, is a species of rodent in the genus ''Nesoryzomys'' of family Cricetidae. It is found only on Fernandina in the Galápago ...

, ''Nesoryzomys fernandinae'' ****

Indefatigable Galápagos mouse ''Nesoryzomys indefessus'', also known as the Santa Cruz nesoryzomys or Indefatigable Galápagos mouse,Duff and Lawson, 2004 is a rodent of the genus ''Nesoryzomys'' of family Cricetidae from Galápagos Islands of Ecuador. It formerly lived on San ...

, ''Nesoryzomys indefessus'' **** Santiago Galápagos mouse, ''Nesoryzomys swarthi'' ***Genus ''

Noronhomys ''Noronhomys vespuccii'', also known as Vespucci's rodent, is an extinct rat species from the islands of Fernando de Noronha off northeastern Brazil. Italian explorer Amerigo Vespucci may have seen it on a visit to Fernando de Noronha in 1503, ...

'' - Vespucci's rodent † **** Vespucci's rodent, ''Noronhomys vespuccii'' † ***Genus ''

Oecomys ''Oecomys'' is a genus of rodent within the tribe Oryzomyini of family Cricetidae. It contains about 17 species, which live in trees and are distributed across forested parts of South America, extending into Panama and Trinidad Trinidad i ...

'' - Arboreal rice rats **** North Amazonian arboreal rice rat, ''Oecomys auyantepui'' ****

Bicolored arboreal rice rat ''Oecomys bicolor'', also known as the white-bellied oecomysMusser and Carleton, 2005 or bicolored arboreal rice rat, is a species of rodent in the genus '' Oecomys'' of family Cricetidae. It has a wide distribution in the Amazon biome, occurrin ...

, ''Oecomys bicolor'' **** Atlantic Forest oecomys, ''Oecomys catherinae'' **** Cleber's arboreal rice rat, ''Oecomys cleberi'' ****

Unicolored rice rat ''Oecomys concolor'', also known as the unicolored oecomys,Musser and Carleton, 2005 unicolored rice rat, or unicolored arboreal rice rat, is a species of rodent in the genus '' Oecomys'' of family Cricetidae. It is found in tropical rainforest ...

, ''Oecomys concolor'' **** Yellow arboreal rice rat, ''Oecomys flavicans'' ****

Mamore arboreal rice rat The mamore arboreal rice rat, (''Oecomys mamorae''), also known as the Mamore oecomysMusser and Carleton, 2005 is an arboreal species of rodent in the genus '' Oecomys'' of family Cricetidae. Its distribution extends over much of Bolivia and into ...

, ''Oecomys mamorae'' ****

Brazilian arboreal rice rat ''Oecomys paricola'', also known as the Brazilian oecomys, Brazilian arboreal rice rat, or South Amazonian arboreal rice rat,Duff and Lawson, 2004 is a species of rodent in the genus ''Oecomys'' of family Cricetidae. It is found in central Brazil ...

, ''Oecomys paricola'' ****

Dusky arboreal rice rat ''Oecomys phaeotis'', also known as the dusky arboreal rice rat or dusky oecomys,Musser and Carleton, 2005 is a species of rodent in the genus ''Oecomys'' of family Cricetidae. It is found on the eastern slopes of the Andes of Peru , image ...

, ''Oecomys phaeotis'' ****

King arboreal rice rat ''Oecomys rex'', also known as the regal oecomysMusser and Carleton, 2005 or king arboreal rice rat, is a species of rodent in the genus ''Oecomys'' of family Cricetidae. It is found in Guyana, Suriname, French Guiana, and nearby parts of Venezu ...

, ''Oecomys rex'' ****

Robert's arboreal rice rat ''Oecomys roberti'', also known as Robert's oecomysMusser and Carleton, 2005 or Robert's arboreal rice rat, is a rodent species from South America in the genus '' Oecomys''. It has a broad distribution in the Amazon biome, being found in Bolivia, ...

, ''Oecomys roberti'' **** Red arboreal rice rat, ''Oecomys rutilus'' ****

Arboreal rice rat ''Oecomys'' is a genus of rodent within the tribe Oryzomyini of family Cricetidae. It contains about 17 species, which live in trees and are distributed across forested parts of South America, extending into Panama and Trinidad. References ...

, ''Oecomys speciosus'' ****

Foothill arboreal rice rat ''Oecomys superans'', also known as the large oecomysMusser and Carleton, 2005 or foothill arboreal rice rat, is a species of rodent in the genus '' Oecomys'' of family Cricetidae. It is found along the eastern slope of the Andes in southern C ...

, ''Oecomys superans'' ****''

Oecomys sydandersoni ''Oecomys sydandersoni'' is an arboreal species of rodent in the genus '' Oecomys''. It lives in forest patches in a small area in eastern Bolivia. It is a medium-sized species, weighing about , with mostly grayish and brownish fur and short an ...

'' **** Long-furred rice rat, ''Oecomys trinitatis'' ***Genus ''

Oligoryzomys ''Oligoryzomys'' is a genus of rodents in the tribe Oryzomyini of family Cricetidae. Many species are known as pygmy rice rats or colilargos.Musser and Carleton, 2005 The genus is found from Mexico to Tierra del Fuego and includes approximately 1 ...

'' - pygmy rice rats **** Andean pygmy rice rat, ''Oligoryzomys andinus'' **** Sandy pygmy rice rat, ''Oligoryzomys arenalis'' ****

Brenda's colilargo ''Oligoryzomys brendae'', also known as Brenda's colilargo,Musser and Carleton, 2005 is a South American species of rodent in the genus ''Oligoryzomys''. It is found only in Tucumán Province in northwestern Argentina, but its taxonomic T ...

, ''Oligoryzomys brendae'' ****

Chacoan pygmy rice rat ''Oligoryzomys chacoensis'', also known as the Chacoan colilargoMusser and Carleton, 2005 or Chacoan pygmy rice rat, is a rodent species from List of mammals of South America, South America. It is found in the Gran Chaco region of southeastern Lis ...

, ''Oligoryzomys chacoensis'' **** Destructive pygmy rice rat, ''Oligoryzomys destructor'' ****

Yellow pygmy rice rat ''Oligoryzomys flavescens'', also known as the flavescent colilargo or yellow pygmy rice rat is a species of rodent in the genus ''Oligoryzomys'' of family Cricetidae. It is found in southern South America, occurring in southern Brazil, Para ...

, ''Oligoryzomys flavescens'' ****

Fornes' colilargo ''Oligoryzomys fornesi'', also known as Fornes' colilargo,Musser and Carleton, 2005 is a species of rodent in the genus ''Oligoryzomys'' of family Cricetidae. It is found from northeastern Brazil via Paraguay into northeastern Argentina. Its ...

, ''Oligoryzomys fornesi'' ****

Fulvous pygmy rice rat ''Oligoryzomys fulvescens'', also known as the fulvous colilargo,Musser and Carleton, 2005 fulvous pygmy rice rat, or northern pygmy rice rat,Duff and Lawson, 2004 is a species of rodent in the genus ''Oligoryzomys'' of family Cricetidae. It is ...

, ''Oligoryzomys fulvescens'' **** Grayish pygmy rice rat, ''Oligoryzomys griseolus'' ****

Long-tailed pygmy rice rat ''Oligoryzomys longicaudatus'', also known as the long-tailed colilargo or long-tailed pygmy rice rat, is a species of rodent in the genus ''Oligoryzomys'' of the family Cricetidae. It is found in the southern Andes of Chile and Argentina, with a ...

, ''Oligoryzomys longicaudatus'' **** Magellanic pygmy rice rat, ''Oligoryzomys magellanicus'' ****

Small-eared pygmy rice rat ''Oligoryzomys microtis'', also known as the small-eared colilargo or small-eared pygmy rice rat, is a species of rodent in the genus ''Oligoryzomys'' of family Cricetidae. It is found in western Brazil, eastern Peru, Bolivia, and northern Parag ...

, ''Oligoryzomys microtis'' ****''

Oligoryzomys moojeni ''Oligoryzomys moojeni'' is a species of rodent from South America in the genus ''Oligoryzomys'' of family Cricetidae. It is known only from central Brazil, where it is found in the cerrado and gallery forests. It is named after twentieth-cent ...

'' ****

Black-footed pygmy rice rat ''Oligoryzomys nigripes'', also known as the black-footed colilargo or the black-footed pygmy rice rat, is a rodent in the genus ''Oligoryzomys'' of family Cricetidae. Oligoryzomys nigripes is a species that has been further divided into differ ...

, ''Oligoryzomys nigripes'' ****''

Oligoryzomys rupestris ''Oligoryzomys rupestris'' is a species of rodent in the genus ''Oligoryzomys'' of family Cricetidae. It is known only from eastern Brazil, where it has been found in several localities in the campos rupestres montane savanna ecoregion. This is a ...

'' ****

Straw-colored pygmy rice rat ''Oligoryzomys stramineus'', also known as the straw-colored colilargo or straw-colored pygmy rice rat,Duff and Lawson, 2004 is a species of rodent in the genus ''Oligoryzomys'' of the family Cricetidae. It occurs only in the cerrado and caatinga ...

, ''Oligoryzomys stramineus'' ****

Sprightly pygmy rice rat ''Oligoryzomys vegetus'', also known as the sprightly colilargoMusser and Carleton, 2005 or sprightly pygmy rice rat, is a species of rodent in the genus ''Oligoryzomys'' of family Cricetidae. It is found only in the mountains of Costa Rica ...

, ''Oligoryzomys vegetus'' **** St. Vincent pygmy rice rat, ''Oligoryzomys victus'' † ***Genus ''

Oreoryzomys ''Oreoryzomys balneator'', also known as the Peruvian rice rat or Ecuadoran oryzomys, is a species of rodent in the tribe Oryzomyini of family Cricetidae. It is found in Ecuador and northern Peru in cloud forest at elevations from 1500 to 1800 m. ...

'' ****''

Oreoryzomys balneator ''Oreoryzomys balneator'', also known as the Peruvian rice rat or Ecuadoran oryzomys, is a species of rodent in the tribe Oryzomyini of family Cricetidae. It is found in Ecuador and northern Peru in cloud forest at elevations from 1500 to 18 ...

'' ***Genus ''

Oryzomys ''Oryzomys'' is a genus of semiaquatic rodents in the tribe Oryzomyini living in southern North America and far northern South America. It includes eight species, two of which—the marsh rice rat (''O. palustris'') of the United States ...

'' - rice rats ****''

Oryzomys albiventer ''Oryzomys albiventer'' is a rodent in the genus ''Oryzomys'' of family Cricetidae from interior western Mexico, in the states of Jalisco, Guanajuato, and Michoacán. First described in 1901 as a separate species, it was later lumped under ''Oryz ...

'' ****

Jamaican rice rat ''Oryzomys antillarum'', also known as the Jamaican rice rat, is an extinct rodent of Jamaica. A member of the genus ''Oryzomys'' within the family Cricetidae, it is similar to '' O. couesi'' of mainland Central America, from where it may ...

, ''Oryzomys antillarum'' † ****

Coues' rice rat ''Oryzomys couesi'', also known as Coues's rice rat, is a semiaquatic rodent in the family Cricetidae occurring from southernmost Texas through Mexico and Central America into northwestern Colombia. It is usually found in wet habitats, such as ...

, ''Oryzomys couesi'' **** Thomas's rice rat, ''Oryzomys dimidiatus'' ****

Gorgas's rice rat ''Oryzomys gorgasi'', also known as Gorgas's oryzomysMusser and Carleton, 2005, p. 1148 or Gorgas's rice rat, is a rodent in the genus ''Oryzomys'' of family Cricetidae. First recorded in 1967, it is known from only a few localities, including ...

, ''Oryzomys gorgasi'' ****''

Oryzomys nelsoni ''Oryzomys nelsoni'' is an extinct rodent of María Madre Island, Nayarit, Mexico. Within the genus ''Oryzomys'' of the family Cricetidae, it may have been most closely related to the mainland species '' O. albiventer''. Since its first de ...

'' † ****

Marsh rice rat The marsh rice rat (''Oryzomys palustris'') is a semiaquatic North American rodent in the family Cricetidae. It usually occurs in wetland habitats, such as swamps and salt marshes. It is found mostly in the eastern and southern United States, fr ...

, ''Oryzomys palustris'' ****

Lower California rice rat ''Oryzomys peninsulae'', also known as the Lower California rice rat, is a species of rodent from western Mexico. Restricted to the southern tip of the Baja California peninsula, it is a member of the genus ''Oryzomys'' of family Cricetidae. ...

, ''Oryzomys peninsulae'' ?† ***Genus ''

Pseudoryzomys ''Pseudoryzomys simplex'', also known as the Brazilian false rice rat or false oryzomys, is a species of rodent in the family Cricetidae from south-central South America. It is found in lowland palm savanna and thorn scrub habitats. It is ...

'' - false rice rats ****

Brazilian false rice rat ''Pseudoryzomys simplex'', also known as the Brazilian false rice rat or false oryzomys, is a species of rodent in the family Cricetidae from south-central South America. It is found in lowland palm savanna and thorn scrub habitats. It is a m ...

, ''Pseudoryzomys simplex'' ***Genus ''

Scolomys ''Scolomys'' is a genus of rodent in the tribe Oryzomyini of the family Cricetidae. Some evidence suggests that it is related to ''Zygodontomys''. It is characterized, among other traits, by spiny fur. It contains two species, '' S. melanops'' an ...

''- New World spiny mice **** South American spiny mouse, ''Scolomys melanops'' **** Ucayali spiny mouse, ''Scolomys ucayalensis'' ***Genus ''

Sigmodontomys ''Sigmodontomys'' is a genus of rodent in the tribe Oryzomyini of family Cricetidae. It is related to '' Nectomys'' and ''Melanomys'' and used to be included in ''Nectomys''. It includes two species, '' Sigmodontomys alfari'' and the much rarer ...

'' - rice water rats ***

Alfaro's rice water rat ''Sigmodontomys alfari'', also known as the short-tailed sigmodontomys, Alfaro's rice water rat, Cana rice rat, or Allen's rice rat,Jones and Engstrom, 1986 is a species of rodent in the subfamily Sigmodontinae of family Cricetidae. It is foun ...

, ''Sigmodontomys alfari'' ***Genus ''

Sooretamys ''Sooretamys angouya'', also known as the rat-headed rice rat,Duff and Lawson, 2004 and Paraguayan rice rat, is a rodent species from South America.Musser and Carleton, 2005 It is found in northeastern Argentina, southern Brazil and Paraguay in fo ...

'' **** Rat-headed rice rat, ''Sooretamys angouya'' ***Genus ''

Tanyuromys ''Tanyuromys'' is a genus of oryzomyine rodents distributed in mountainous areas from Central America to the western part of South America. The species in this genus have historically been placed in ''Sigmodontomys'', but according to cladistic ...

'' ****

Harris's rice water rat ''Tanyuromys aphrastus'', known as the long-tailed sigmodontomys, Harris's rice water rat, or the long-tailed rice rat, is a species of rodent in the family Cricetidae. It is known from Costa Rica, Panama, and Ecuador. In 2012, it was reassig ...

, ''Tanyuromys aphrastus'' **** Lee's long-tailed montane rat, ''Tanyuromys thomasleei'' ***Genus ''

Transandinomys ''Transandinomys'' is a genus of rodents in the tribe Oryzomyini of family Cricetidae. It includes two species—'' T. bolivaris'' and '' T. talamancae''—found in forests from Honduras in Central America south and east to southwester ...

'' ****

Long-whiskered rice rat ''Transandinomys bolivaris'', also known as the long-whiskered rice rat, is a rodent in the family Cricetidae. It is found in humid forest from northeastern Honduras to western Ecuador, up to above sea level. Since it was first described in 1 ...

, ''Transandinomys bolivaris'' ****''

Transandinomys talamancae ''Transandinomys talamancae'' is a rodent in the family Cricetidae that occurs from Costa Rica to southwestern Ecuador and northern Venezuela. Its habitat consists of lowland forests up to above sea level. With a body mass of , it is a medium- ...

'' ***Genus ''

Zygodontomys ''Zygodontomys'' is a genus of rodent in the tribe Oryzomyini of the family Cricetidae. Its closest relative may be ''Scolomys''. It ranges from Central America east to the Guianas. It contains two species: ''Zygodontomys brunneus'' and ''Zyg ...

'' - cane mice **** Short-tailed cane mouse, ''Zygodontomys brevicauda'' **** Colombian cane mouse, ''Zygodontomys brunneus'' **Tribe Thomasomyini ***Genus ''

Abrawayaomys Ruschi's rat or Ruschi's spiny mouse (''Abrawayaomys ruschii'') is a rodent species found in Argentina and Brazil. Some cranial features suggest it may be an archaic relative of the paramo Oldfield mouse (''Thomasomys paramorum''). The upper par ...

'' - Ruschi's rat ****

Ruschi's rat Ruschi's rat or Ruschi's spiny mouse (''Abrawayaomys ruschii'') is a rodent species found in Argentina and Brazil. Some cranial features suggest it may be an archaic relative of the paramo Oldfield mouse (''Thomasomys paramorum''). The upper ...

, ''Abrawayaomys ruschii'' ***Genus ''

Aepeomys ''Aepeomys'' is a small genus of rodents in the family Cricetidae. The species in this genus are found in Ecuador (''A. lugens'') and Venezuela (both species). It contains the following two species: * Olive montane mouse (''Aepeomys lugens'') * ...

'' - montane mice ****

Olive montane mouse The olive montane mouse (''Aepeomys lugens'') is a species of rodent in the family Cricetidae. It is found in Ecuador and Venezuela. References Aepeomys Mammals described in 1896 Taxa named by Oldfield Thomas Taxonomy articles create ...

, ''Aepeomys lugens'' ****

Reig's montane mouse Reig's montane mouse (''Aepeomys reigi'') is a species of rodent in the family Cricetidae. It is found only in Venezuela. It is named after Argentine biologist Osvaldo Reig Osvaldo Alfredo Reig, (14 August 1929 – 13 March 1992), was an Arg ...

, ''Aepeomys reigi'' ***Genus '' Chilomys'' - Columbian forest mouse ****

Colombian forest mouse The Colombian forest mouse (''Chilomys instans'') is a species of rodent in the family Cricetidae. Some authorities consider it to be the only species in the genus ''Chilomys'', while others accept ''Chilomys fumeus'' as being a valid species ...

, ''Chilomys instans'' ***Genus '' Delomys'' - Atlantic Forest rats ****

Montane Atlantic Forest rat The montane Atlantic Forest rat (''Delomys collinus'') is a South American rodent species of the family Cricetidae. It is endemic to part of the Atlantic Forest region of southeastern Brazil, where it is found at elevations from 1000 to 2700 ...

, ''Delomys collinus'' **** Striped Atlantic Forest rat, ''Delomys dorsalis'' ****

Pallid Atlantic Forest rat The pallid Atlantic Forest rat (''Delomys sublineatus'') is a rodent species from South America. It is found in Brazil. References Delomys Mammals of Brazil Mammals described in 1903 Taxa named by Oldfield Thomas {{Cricetidae-s ...

, ''Delomys sublineatus'' ***Genus '' Phaenomys'' - Rio de Janeiro arboreal rat **** Rio de Janeiro arboreal rat, ''Phaenomys ferrugineus'' ***Genus ''

Rhagomys ''Rhagomys'' is a genus of South American rodents in the tribe Thomasomyini of the family Cricetidae. Two species separated by about 3100 km are known, from southeast Peru and Bolivia east of the Andes, and in the Atlantic Forest of southea ...

'' - arboreal mice ****

Long-tongued arboreal mouse The long-tongued arboreal mouse (''Rhagomys longilingua'') is a South American rodent species of the family Cricetidae. It is found in a variety of habitats, including dense forest, in Bolivia and Peru at elevations from on the eastern side of t ...

, ''Rhagomys longilingua'' ****

Brazilian arboreal mouse The Brazilian arboreal mouse (''Rhagomys rufescens'') is a South American rodent species of the family Cricetidae. It is found in the Atlantic Forest of southeast Brazil, often close to bamboo thickets. It can be distinguished from ''Rhagomys lon ...

, ''Rhagomys rufescens'' ***Genus ''

Rhipidomys ''Rhipidomys'' is a genus of rodents in the family Cricetidae, The following 24 species of climbing mouse species are currently recognised: * ''Rhipidomys albujai'' * Southern climbing mouse (''Rhipidomys austrinus'') * Cariri climbing mouse ...

'' - climbing mice **** Southern climbing mouse, ''Rhipidomys austrinus'' **** Cariri climbing mouse, ''Rhipidomys cariri'' ****

Cauca climbing mouse The Cauca climbing mouse (''Rhipidomys caucensis'') is a species of arboreal rodent in the family Cricetidae. It is endemic to Colombia, where it is found in montane forest Montane ecosystems are found on the slopes of mountains. The alpi ...

, ''Rhipidomys caucensis'' ****

Coues's climbing mouse Coues's climbing mouse (''Rhipidomys couesi'') is a species of rodent in the family Cricetidae. It is found in Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North ...

, ''Rhipidomys couesi'' **** Eastern Amazon climbing mouse, ''Rhipidomys emiliae'' ****

Buff-bellied climbing mouse The buff-bellied climbing mouse (''Rhipidomys fulviventer'') is a species of rodent in the family Cricetidae. It is found in Colombia and Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República ...

, ''Rhipidomys fulviventer'' ****

Gardner's climbing mouse Gardner's climbing mouse (''Rhipidomys gardneri'') is a rodent species from South America. It is found in western Brazil, southeastern Peru and northeastern Bolivia. It is an uncommon, arboreal species, but faces no particular threats so the ...

, ''Rhipidomys gardneri'' **** Broad-footed climbing mouse, ''Rhipidomys latimanus'' ****

White-footed climbing mouse The white-footed climbing mouse (''Rhipidomys leucodactylus'') is a species of South American rodent found in Bolivia, Brazil, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela. It is the type species of the genus and the type ...

, ''Rhipidomys leucodactylus'' ****

MacConnell's climbing mouse MacConnell's climbing mouse (''Rhipidomys macconnelli'') is a nocturnal and arboreal rodent species from South America. It is found in Brazil, Guyana and Venezuela, where it inhabits rainforest Rainforests are characterized by a close ...

, ''Rhipidomys macconnelli'' ****

Cerrado climbing mouse The cerrado climbing mouse or long-tailed rhipidomys (''Rhipidomys macrurus'') is an arboreal rodent species in the family Cricetidae from South America. It is found in primary or secondary forests of the cerrado and caatinga in central an ...

, ''Rhipidomys macrurus'' ****

Atlantic Forest climbing mouse The Atlantic Forest climbing mouse (''Rhipidomys mastacalis'') is an arboreal rodent species in the family Cricetidae from South America. It is found in the Atlantic Forest of southeastern Brazil at elevations from sea level to 1500 m. Its ...

, ''Rhipidomys mastacalis'' **** Peruvian climbing mouse, ''Rhipidomys modicus'' ****

Splendid climbing mouse The splendid climbing mouse (''Rhipidomys nitela'') is a rodent species from South America. It is found in Brazil, French Guiana, Guyana, Suriname Suriname (; srn, Sranankondre or ), officially the Republic of Suriname ( nl, Republie ...

, ''Rhipidomys nitela'' ****

Yellow-bellied climbing mouse The yellow-bellied climbing mouse (''Rhipidomys ochrogaster'') is a species of arboreal rodent in the family Cricetidae. It is known only from southeastern Peru, where it has been found in cloud forest A cloud forest, also called a wate ...

, ''Rhipidomys ochrogaster'' ****

Venezuelan climbing mouse The Venezuelan climbing mouseMusser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. Pp. 894-1531 ''in'' Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Bal ...

, ''Rhipidomys venezuelae'' ****

Charming climbing mouse The charming climbing mouse (''Rhipidomys venustus'') is a species of nocturnal rodent in the family Cricetidae. It endemic to Venezuela.Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. Pp. 894-1531 ''in'' Mammal Species of the World ...

, ''Rhipidomys venustus'' ****

Wetzel's climbing mouse Wetzel's climbing mouse (''Rhipidomys wetzeli'') is a species of rodent in the family Cricetidae. It is endemic to Venezuela. References * Baillie, J. 1996.Rhipidomys wetzeli 2006 IUCN Red List of Threatened Species. Downloaded on 20 July ...

, ''Rhipidomys wetzeli'' ***Genus ''

Thomasomys ''Thomasomys'' is a genus of rodent in the family Cricetidae, named after British zoologist Oldfield Thomas. Nuclear DNA sequence analysis has indicated that it is a sister taxon to ''Rhagomys''. It contains the following species: * Anderson ...

'' - Oldfield mice ****

Anderson's Oldfield mouse Anderson's Oldfield mouse (''Thomasomys andersoni'') is a species of rodent in the family Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskra ...

, ''Thomasomys andersoni'' ****

Apeco Oldfield mouse The Apeco Oldfield mouse (''Thomasomys apeco'') is a species of rodent in the family Cricetidae. It is known only from a single locality in north central Peru, which includes Rio Abiseo National Park, where it was found in cloud forest A ...

, ''Thomasomys apeco'' ****

Golden Oldfield mouse The golden Oldfield mouse or golden thomasomys (''Thomasomys aureus'') is a species of rodent in the family Cricetidae. It is found in Colombia, Ecuador, Peru, and Venezuela. Both the common and genus name commemorate the British zoologist O ...

, ''Thomasomys aureus'' ****

Beady-eyed mouse The beady-eyed mouse (''Thomasomys baeops'') is a species of rodent in the family Cricetidae. It is found only in Ecuador. References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mammal Species of ...

, ''Thomasomys baeops'' ****

Silky Oldfield mouse The silky Oldfield mouse (''Thomasomys bombycinus'') is a species of rodent in the family Cricetidae. It is found only in Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions ...

, ''Thomasomys bombycinus'' ****

White-tipped Oldfield mouse The white-tipped Oldfield mouse (''Thomasomys caudivarius'') is a species of rodent in the family Cricetidae. It is found in the Andes from central Ecuador to northern Peru, at elevations from 2500 to 3350 m, where it lives in montane forest. ...

, ''Thomasomys caudivarius'' ****

Ashy-bellied Oldfield mouse The ashy-bellied Oldfield mouse (''Thomasomys cinereiventer'') is a species of rodent in the family Cricetidae. It is found in Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular re ...

, ''Thomasomys cinereiventer'' **** Ash-colored Oldfield mouse, ''Thomasomys cinereus'' ****

Cinnamon-colored Oldfield mouse The cinnamon-colored Oldfield mouse (''Thomasomys cinnameus''), also called the "cinnamon-colored Thomasomys", is a species of rodent in the family Cricetidae. It is present in the Cordillera Oriental of the Andes from north central Ecuador t ...

, ''Thomasomys cinnameus'' ****

Daphne's Oldfield mouse Daphne's Oldfield mouse (''Thomasomys daphne'') is a species of rodent in the family Cricetidae. It is found in Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yell ...

, ''Thomasomys daphne'' **** Peruvian Oldfield mouse, ''Thomasomys eleusis'' ****

Wandering Oldfield mouse The wandering Oldfield mouse (''Thomasomys erro''), also called the wandering thomasomys, is a species of rodent in the family Cricetidae. It has been found in both the Cordillera Oriental and Cordillera Occidental of the Andes in central and ...

, ''Thomasomys erro'' ****

Slender Oldfield mouse The slender Oldfield mouse (''Thomasomys gracilis'') is a species of rodent in the family Cricetidae. It is found in Ecuador and Peru. References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mamm ...

, ''Thomasomys gracilis'' ****

Hudson's Oldfield mouse Hudson's Oldfield mouse (''Thomasomys hudsoni'') is a species of rodent in the family Cricetidae. It is known only from the Andes in southern Ecuador, where it has been found at an elevation of 3100 m. It was formerly considered a subspecies o ...

, ''Thomasomys hudsoni'' ****

Woodland Oldfield mouse The woodland Oldfield mouse (''Thomasomys hylophilus'') is a species of rodent in the family Cricetidae. It is found in Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions i ...

, ''Thomasomys hylophilus'' ****

Inca Oldfield mouse The Inca Oldfield mouse (''Thomasomys incanus'') is a species of rodent in the family Cricetidae. It is found only in Peru. References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mammal Species ...

, ''Thomasomys incanus'' ****

Strong-tailed Oldfield mouse The strong-tailed Oldfield mouse (''Thomasomys ischyrus'') is a species of rodent in the family Cricetidae. It is found only in Peru. References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mammal ...

, ''Thomasomys ischyrus'' **** Kalinowski's Oldfield mouse, ''Thomasomys kalinowskii'' ****

Ladew's Oldfield mouse Ladew's Oldfield mouse (''Thomasomys ladewi'') is a species of rodent in the family Cricetidae. It is found only in Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, y ...

, ''Thomasomys ladewi'' ****

Soft-furred Oldfield mouse The soft-furred Oldfield mouse (''Thomasomys laniger'') is a species of rodent in the family Cricetidae. It is found in Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions i ...

, ''Thomasomys laniger''** ****

Large-eared Oldfield mouse The large-eared Oldfield mouse (''Thomasomys macrotis'') is a species of rodent in the family Cricetidae. It is known only from a single locality in the Andes in north central Peru (which includes Rio Abiseo National Park), in montane forest ...

, ''Thomasomys macrotis'' ****

Unicolored Oldfield mouse The unicolored Oldfield mouse (''Thomasomys monochromos'') is a species of rodent in the family Cricetidae. It is found only in Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular r ...

, ''Thomasomys monochromos'' ****

Snow-footed Oldfield mouse The snow-footed Oldfield mouse (''Thomasomys niveipes'') is a species of rodent in the family Cricetidae. It is found only in Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular reg ...

, ''Thomasomys niveipes'' ****

Distinguished Oldfield mouse The distinguished Oldfield mouse (''Thomasomys notatus'') is a species of rodent in the family Cricetidae. It is found only in Peru. References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mammal ...

, ''Thomasomys notatus'' ****

Ashaninka Oldfield mouse The Ashaninka Oldfield mouse (''Thomasomys onkiro'') is a species of rodent in the family Cricetidae. It is known only from a single locality (which includes Otishi National Park) in the Cordillera Oriental of the southern Peruvian Andes, in ...

, ''Thomasomys onkiro'' ****

Montane Oldfield mouse The montane Oldfield mouse (''Thomasomys oreas'') is a species of rodent in the family Cricetidae. It is found only in Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (r ...

, ''Thomasomys oreas'' **** Paramo Oldfield mouse, ''Thomasomys paramorum'' ****

Popayán Oldfield mouse The Popayán Oldfield mouse (''Thomasomys popayanus''), also called the "Popayán thomasomys", is a species of rodent in the family Cricetidae. It is present in the Andes of southwestern and central western Colombia, at elevations from 1800 to ...

, ''Thomasomys popayanus'' ****

Cajamarca Oldfield mouse The Cajamarca Oldfield mouse (''Thomasomys praetor'') is a species of rodent in the family Cricetidae. It is present in the Andes of northwestern Peru, where its habitats include shrubby páramo, montane forest, and secondary forest. The ro ...

, ''Thomasomys praetor'' **** Thomas's Oldfield mouse, ''Thomasomys pyrrhonotus'' ****

Rhoads's Oldfield mouse Rhoads's Oldfield mouse (''Thomasomys rhoadsi'') is a species of rodent in the family Cricetidae. It is found only in Ecuador. References * Baillie, J. 1996.Thomasomys rhoadsi 2006 IUCN Red List of Threatened Species. Downloaded on 20 July 2 ...

, ''Thomasomys rhoadsi'' ****

Rosalinda's Oldfield mouse Rosalinda's Oldfield mouse (''Thomasomys rosalinda'') is a species of rodent in the family Cricetidae. It is found only in Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_ ...

, ''Thomasomys rosalinda'' ****

Forest Oldfield mouse The forest Oldfield mouse (''Thomasomys silvestris'') is a species of rodent in the family Cricetidae. It is found only in Ecuador. References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mammal ...

, ''Thomasomys silvestris'' ****

Taczanowski's Oldfield mouse Taczanowski's Oldfield mouse (''Thomasomys taczanowskii'') is a species of rodent in the family Cricetidae. It is found only in Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , ...

, ''Thomasomys taczanowskii'' ****

Ucucha Oldfield mouse ''Thomasomys ucucha'', also known as the ucucha thomasomys, is a rodent in the genus ''Thomasomys'' of the family Cricetidae. It is known only from high altitude forest and grassland habitats in the Cordillera Oriental of Ecuador. Seven othe ...

, ''Thomasomys ucucha'' ****

Dressy Oldfield mouse The dressy Oldfield mouse (''Thomasomys vestitus'') is a species of rodent in the family Cricetidae. It is found only in Venezuela. References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mammal ...

, ''Thomasomys vestitus'' ****

Pichincha Oldfield mouse The Pichincha Oldfield mouse (''Thomasomys vulcani'') is a species of rodent in the family Cricetidae. It is present in the Cordillera Occidental of the Andes of Ecuador, where its habitats include shrubby páramo and montane forest. It is ...

, ''Thomasomys vulcani'' ***Genus ''

Wilfredomys The greater Wilfred's mouse, ''Wilfredomys oenax'', is a rodent species from South America. It is found in southern Brazil and Uruguay Uruguay (; ), officially the Oriental Republic of Uruguay ( es, República Oriental del Uruguay), is a co ...

'' - Wilfred's mice **** Greater Wilfred's mouse, ''Wilfredomys oenax'' **Tribe Wiedomyini ***Genus '' Cholomys'' † ****'' Cholomys pearsoni'' † ***Genus ''

'' - red-nosed mouse ****

Cerrado red-nosed mouse The cerrado red-nosed mouse (''Wiedomys cerradensis'') is a rodent species from South America. It is known from one locality in Bahia, eastern Brazil. The species was found in semi-deciduous forest in the cerrado ecoregion An ecoregion (eco ...

, ''Wiedomys cerradensis'' ****

Red-nosed mouse The red-nosed mouse (''Wiedomys pyrrhorhinos'') is an arboreal rodent species endemic to Brazil. It is found in caatinga and cerrado habitat in southeast Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portug ...

, ''Wiedomys pyrrhorhinos'' **Tribe

Abrotrichini Abrotrichini, also known as the Andean clade or southern Andean clade,Musser and Carleton, 2005, p. 1087 is a tribe of rodents in the subfamily Sigmodontinae.D'Elía et al., 2007, p. 188 It includes about fifteen species in four genera, ...

***Genus ''

Abrothrix ''Abrothrix'' is a genus of rodent in the tribe Abrotrichini of family Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World ...

'' ****

Andean altiplano mouse ''Abrothrix andina'', also known as the Andean Altiplano mouse or Andean akodont,Musser and Carleton, 2005, p. 1088 is a species of rodent in the genus ''Abrothrix'' of family Cricetidae. It is found in the Altiplano habitat of the Andes ...

, ''Abrothrix andinus'' **** Hershkovitz's grass mouse, ''Abrothrix hershkovitzi'' **** Gray grass mouse, ''Abrothrix illuteus'' ****

Jelski's altiplano mouse ''Abrothrix jelskii'', also known as Jelski's Altiplano mouse, Jelski's grass mouse,Duff and Lawson, 2004 or the ornate akodont,Musser and Carleton, 2005, p. 1089 is a species of rodent Rodents (from Latin , 'to gnaw') are mammals o ...

, ''Abrothrix jelskii'' ****

Woolly grass mouse ''Abrothrix lanosus'', also known as the woolly grass mouse or woolly akodont,Musser and Carleton, 2005, p. 1089 is a species of rodent in the family Cricetidae. It is found in southern Argentina and Chile. It was previously classified in th ...

, ''Abrothrix lanosus'' ****

Long-haired grass mouse ''Abrothrix longipilis'', also known as the long-haired grass mouse or long-haired akodont,Musser and Carleton, 2005, p. 1089 is a species of rodent in the family Cricetidae. It is found in central and southern Argentina and Chile. The south ...

, ''Abrothrix longipilis'' ****

Olive grass mouse ''Abrothrix olivacea'', also known as the olive grass mouse or olive akodont,Musser and Carleton, 2005, p. 1090 is a species of rodent in the genus ''Abrothrix'' of family Cricetidae. It is found from northern Chile Chile, officially ...

, ''Abrothrix olivaceus'' **** Sanborn's grass mouse, ''Abrothrix sanborni'' ***Genus ''

Chelemys ''Chelemys'' is a genus of South American rodents in the tribe Abrotrichini of family Cricetidae. Three species—'' Chelemys delfini'', '' Chelemys macronyx'', and '' Chelemys megalonyx''—are known, all found in central and southern Chile and ...

'' - long-clawed mice ****

Magellanic long-clawed akodont ''Chelemys delfini'', also known as the Magellanic long-clawed akodont,Musser and Carleton, 2005, p. 1109 is a species of rodent in the genus '' Chelemys'' of family Cricetidae. It is endemic to the areas of Punta Arenas and Torres del Paine ...

, ''Chelemys delfini'' ****

Andean long-clawed mouse ''Chelemys macronyx'', also known as the Andean long-clawed mouse or Andean long-clawed akodont,Musser and Carleton, 2005, p. 1110 is a species of rodent in the genus '' Chelemys'' of family Cricetidae. It is native to Argentina and Chil ...

, ''Chelemys macronyx'' ****

Large long-clawed mouse ''Chelemys megalonyx'', also known as the large long-clawed mouse or large long-clawed akodontMusser and Carleton, 2005, p. 1110 is a species of rodent in the genus '' Chelemys'' of family Cricetidae. It is endemic to central Chile. Refe ...

, ''Chelemys megalonyx'' ***Genus ''

Geoxus ''Geoxus'' is a genus of South American rodents in the tribe Abrotrichini of family Cricetidae. Two species—''Geoxus valdivianus'' and ''Geoxus annectens ''Geoxus annectens'', also known as Pearson's long-clawed akodont or Pearson's long-cla ...

'' - long-clawed mole mouse ****

Long-clawed mole mouse ''Geoxus valdivianus'', also known as the long-clawed mole mouse or Valdivian long-clawed akodont, is a species of rodent in the tribe Abrotrichini of family Cricetidae found in the Valdivian temperate rain forests and Magellanic subpolar forests ...

, ''Geoxus valdivianus'' ****

Pearson's long-clawed mouse ''Geoxus annectens'', also known as Pearson's long-clawed akodont or Pearson's long-clawed mouse, is a species of rodent in the tribe Abrotrichini of family Cricetidae. Molecular data suggests that its closest relative is ''Geoxus valdivianus''. ...

, ''Geoxus annectens'' ***Genus ''

Notiomys ''Notiomys edwardsii'', also known as Edwards's long-clawed mouse, Edward's long-clawed akodont,Musser and Carleton, 2005, p. 1136 or Milne-Edwards' long-clawed mouse, is a rodent in the tribe Abrotrichini from southern Argentina. It is the ...

'' - Edward's long-clawed mouse ****

Edwards's long-clawed mouse ''Notiomys edwardsii'', also known as Edwards's long-clawed mouse, Edward's long-clawed akodont,Musser and Carleton, 2005, p. 1136 or Milne-Edwards' long-clawed mouse, is a rodent in the tribe Abrotrichini from southern Argentina. It is th ...

, ''Notiomys edwardsii'' **Tribe

Akodontini Akodontini is the second most speciose rodent tribe of the subfamily Sigmodontinae. It includes at least 106 living species in 19 genera and is distributed mainly in the southern half of South America, with only two genera extending into Guyana ( ...

***Genus ''

Akodon ''Akodon'' is a genus consisting of South American grass mice. They mostly occur south of the Amazon Basin and along the Andes north to Venezuela, but are absent from much of the basin itself, the far south of the continent, and the lowlands west ...

'' - South American grass mice ****

Highland grass mouse ''Akodon aerosus'', also known as the highland grass mouse or Yungas akodont,Musser and Carleton, 2005, p. 1092 is a species of rodent in the family Cricetidae. It is found in the eastern Andes from eastern Ecuador through Peru into cent ...

, ''Akodon aerosus'' **** Colombian grass mouse, ''Akodon affinis'' ****

White-bellied grass mouse ''Akodon albiventer'', also known as the white-bellied grass mouse or white-bellied akodont,Musser and Carleton, 2005, p. 1092 is a species of rodent in the family Cricetidae. It is found in the Andean highlands from southeastern Peru to so ...

, ''Akodon albiventer'' ****

Azara's grass mouse ''Akodon azarae'', also known as Azara's akodontMusser and Carleton, 2005, p. 1093 or Azara's grass mouse, is a rodent species from South America. It is found from southernmost Brazil through Paraguay and Uruguay into eastern Argentina. It is ...

, ''Akodon azarae'' ****

Bolivian grass mouse ''Akodon boliviensis'', also known as the Bolivian grass mouse or Bolivian akodont,Musser and Carleton, 2005, p. 1093 is a species of rodent in the family Cricetidae. It is found in the Andes from southeastern Peru through Bolivia into north ...

, ''Akodon boliviensis'' ****

Budin's grass mouse ''Akodon budini'', also known as Budin's akodont or Budin's grass mouse, is a species of rodent in the family Cricetidae. It is found in the Andes of northwestern Argentina and adjacent Bolivia.Musser and Carleton, 2005, p. 1094 The species ...

, ''Akodon budini'' ****''

Akodon caenosus ''Akodon caenosus'' is a rodent in the genus ''Akodon'' found in northwestern Argentina and south-central Bolivia. Since its description in 1918, it has been alternatively classified as a separate species or a subspecies of ''Akodon lutescens'' ( ...

'' **** Cursor grass mouse, ''Akodon cursor'' **** Day's grass mouse, ''Akodon dayi'' ****

Dolorous grass mouse The dolorous grass mouse or Córdoba akodont (''Akodon dolores'') is a species of rodent in the family Cricetidae. It is found only in Argentina. It is an invertivore Feeding is the process by which organisms, typically animals, obtai ...

, ''Akodon dolores'' ****

Smoky grass mouse The smoky grass mouse (''Akodon fumeus'') is a species of rodent in the family Cricetidae. It is found in Argentina, Bolivia and Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , ...

, ''Akodon fumeus'' ****''

Akodon glaucinus ''Akodon'' is a genus consisting of South American grass mice. They mostly occur south of the Amazon Basin and along the Andes north to Venezuela, but are absent from much of the basin itself, the far south of the continent, and the lowlands west ...

'' **** Intelligent grass mouse, ''Akodon iniscatus'' ****

Junín grass mouse The Junín grass mouse (''Akodon juninensis'') is a species of rodent in the family Cricetidae. It is found only in Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol ...

, ''Akodon juninensis'' ****

Koford's grass mouse Koford's grass mouse (''Akodon kofordi'') is a species of rodent in the family Cricetidae. It is found only in Peru. It is named after American biologist Carl B. Koford. References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroi ...

, ''Akodon kofordi'' ****

Lindbergh's grass mouse Lindbergh's grass mouse (''Akodon lindberghi'') is a rodent species from South America. It is found in Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America ...

, ''Akodon lindberghi'' **** Altiplano grass mouse, ''Akodon lutescens'' **** Thespian grass mouse, ''Akodon mimus'' ****

Molina's grass mouse Molina's grass mouse (''Akodon molinae'') is a species of rodent in the family Cricetidae. It is found only in Argentina. References

Akodon Mammals of Argentina Mammals described in 1968 Taxonomy articles created by Polbot {{Akodon-stu ...

, ''Akodon molinae'' ****

Soft grass mouse The soft grass mouse is a species of rodent in the family Cricetidae. It is found in Ecuador and Peru. References Akodon Mammals described in 1894 Taxa named by Oldfield Thomas Taxonomy articles created by Polbot {{Akodon-stub ...

, ''Akodon mollis'' **** Montane grass mouse, ''Akodon montensis'' **** Caparaó grass mouse, ''Akodon mystax'' **** Neuquén grass mouse, ''Akodon neocenus'' ****

El Dorado grass mouse The El Dorado grass mouse or Utcubamba akodont (''Akodon orophilus'') is a species of rodent in the family Cricetidae. It is found in Ecuador and Peru. References Akodon Mammals of Peru Mammals described in 1913 Taxonomy articles cre ...

, ''Akodon orophilus'' **** Paraná grass mouse, ''Akodon paranaensis'' ****

Tarija akodont The Tarija akodont (''Akodon pervalens''), or Tarija grass mouse, is a species in the family Cricetidae native to Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, ye ...

, ''Akodon pervalens'' **** Philip Myers's akodont, ''Akodon philipmyersi'' ****'' Akodon polopi'' ****

Reig's grass mouse Reig's grass mouse (''Akodon reigi'') is a South American rodent species found in Brazil and Uruguay. It is named after Argentine biologist Osvaldo Reig Osvaldo Alfredo Reig, (14 August 1929 – 13 March 1992), was an Argentine biologist a ...

, ''Akodon reigi'' ****

São Paulo grass mouse The São Paulo grass mouse (''Akodon sanctipaulensis'') is a rodent species from South America. It is found in Brazil. References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mammal Species of th ...

, ''Akodon sanctipaulensis'' ****

Serra do Mar grass mouse The Serra do Mar grass mouse or Cerrado grass mouse (''Akodon serrensis'') is a rodent species from South America. It is found in Brazil. Pardiñas ''et al.'' (2016) transferred this species from the genus '' Akodon'' to the separate akodontine ...

, ''Akodon serrensis'' **** Cochabamba grass mouse, ''Akodon siberiae'' ****

White-throated grass mouse The white-throated or grey-bellied grass mouse (''Akodon simulator'') is a species of rodent in the family Cricetidae. It is found in Argentina and Bolivia. References

*Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. ...

, ''Akodon simulator'' **** Spegazzini's grass mouse, ''Akodon spegazzinii'' **** Puno grass mouse, ''Akodon subfuscus'' **** Silent grass mouse, ''Akodon surdus'' ****

Forest grass mouse ''Akodon sylvanus'', also known as the forest grass mouse or woodland akodont,Musser and Carleton, 2005 is a species of rodent in the family Cricetidae. It is found only in a small part of northwestern Argentina. References *Jayat, J.P., Or ...

, ''Akodon sylvanus'' ****''

Akodon tartareus ''Akodon'' is a genus consisting of South American grass mice. They mostly occur south of the Amazon Basin and along the Andes north to Venezuela, but are absent from much of the basin itself, the far south of the continent, and the lowlands wes ...

'' **** Chaco grass mouse, ''Akodon toba'' ****

Cloud forest grass mouse The cloud forest grass mouse (''Akodon torques'') is a species of rodent in the family Cricetidae. It is found only in Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_sym ...

, ''Akodon torques'' **** Variable grass mouse, ''Akodon varius'' ***Genus ''

Neomicroxus ''Neomicroxus'' is a genus of grass mice. Both species were placed in the genus Akodon ''Akodon'' is a genus consisting of South American grass mice. They mostly occur south of the Amazon Basin and along the Andes north to Venezuela, but are a ...

'' ****

Bogotá grass mouse The Bogotá grass mouseDuff and Lawson, 2004 or Bogotá akodont,Musser and Carleton, 2005, p. 1093 (''Neomicroxus bogotensis'') is a species of rodent in the family Cricetidae. It is found in the Andes eastern and central Colombia and northw ...

, ''Neomicroxus bogotensis'' ****

Ecuadorian grass mouse The Ecuadorian grass mouse (''Neomicroxus latebricola'') is a species of rodent in the family Cricetidae. It is found only in Ecuador Ecuador ( ; ; Quechuan languages, Quechua: ''Ikwayur''; Shuar language, Shuar: ''Ecuador'' or ''Ekuatur ...

, ''Neomicroxus latebricola'' ***Genus ''

Bibimys ''Bibimys'' is a genus of new world rats. Commonly known as the crimson-nosed rats, there are three species: *'' Bibimys chacoensis'' - Chaco crimson-nosed rat - found in north-east Argentina and Paraguay *'' Bibimys labiosus'' - Large-lipped c ...

'' - crimson-nosed rats **** Chaco crimson-nosed rat, ''Bibimys chacoensis'' ****

Large-lipped crimson-nosed rat ''Bibimys labiosus''), also known as the large-lipped crimson-nosed rat is a species of rodent in the family Cricetidae. It is found in Brazil and Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argent ...

, ''Bibimys labiosus'' **** Torres's crimson-nosed rat, ''Bibimys torresi'' ***Genus '' Blarinomys'' - Brazilian shrew-mouse ****

Brazilian shrew-mouse The Brazilian shrew mouse (''Blarinomys breviceps''), also known as the blarinine akodont,Musser and Carleton, 2005 is a rodent in the tribe Akodontini from the Atlantic Forest The Atlantic Forest ( pt, Mata Atlântica) is a South American ...

, ''Blarinomys breviceps'' ***Genus ''

Brucepattersonius ''Brucepattersonius'' is a genus of rodents within the tribe Akodontini from southeastern South America. Also known as brucies, the genus is named after Bruce Patterson, MacArthur Curator at the Department of Zoology (Mammals), at the Field Mu ...

'' ****

Grey-bellied brucie ''Brucepattersonius griserufescens'', also known as the gray-bellied akodontMusser and Carleton, 2005 or grey-bellied brucie,Duff and Lawson, 2004 is a rodent in the cricetid genus ''Brucepattersonius ''Brucepattersonius'' is a genus of ro ...

, ''Brucepattersonius griserufescens'' ****

Guaraní brucie ''Brucepattersonius guarani'', also known as the Guaraní akodont or Guaraní brucie,Duff and Lawson, 2004 is a South American rodent in the genus ''Brucepattersonius''. It is known from a single specimen from Misiones Province in northeastern ...

, ''Brucepattersonius guarani'' ****

Red-bellied brucie ''Brucepattersonius igniventris'', also known as the red-bellied akodontMusser and Carleton, 2005 or red-bellied brucie,Duff and Lawson, 2004 is a South American rodent in the genus ''Brucepattersonius''. It is known only from a few specimens fro ...

, ''Brucepattersonius igniventris'' ****

Ihering's hocicudo ''Brucepattersonius iheringi'', also known as Ihering's akodont,Musser and Carleton, 2005 Ihering's hocicudo, or Ihering's brucie,Duff and Lawson, 2004 is a South American rodent in the genus ''Brucepattersonius''. It occurs in Santa Catarina an ...

, ''Brucepattersonius iheringi'' ****

Misiones brucie ''Brucepattersonius misionensis'', also known as the Misiones akodont or Misiones brucie,Duff and Lawson, 2004 is a rodent species from South America in the genus ''Brucepattersonius ''Brucepattersonius'' is a genus of rodents within the tr ...

, ''Brucepattersonius misionensis'' ****

Arroyo of Paradise brucie The Arroyo of Paradise brucie (''Brucepattersonius paradisus''), also known as the Arroyo of Paradise akodont is a South American rodent species of the family Cricetidae. It is known only from northeastern Argentina. No population data is av ...

, ''Brucepattersonius paradisus'' ****

Soricine brucie The soricine brucie (''Brucepattersonius soricinus'') is a rodent species from South America. It is found in Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South A ...

, ''Brucepattersonius soricinus'' ***Genus '' Deltamys'' - Kemp's grass mouse ****

Kemp's grass mouse Kemp's grass mouse (''Deltamys kempi'') is a species of South American rodent in the family Cricetidae. It is the only species in the genus ''Deltamys''. It was formerly considered a member of the genus '' Akodon'', but is now considered suf ...

, ''Deltamys kempi'' ***Genus ''

Juscelinomys ''Juscelinomys'' is a genus of burrowing mice. The name is derived from Brazilian president Juscelino Kubitschek who created the city of Brasilia where the Brasilia burrowing mouse was discovered. There are two living species: * †''J. canda ...

'' - burrowing mice ****

Candango mouse The candango mouse or candango akodont (''Juscelinomys candango'') is an extinct rodent species from South America. It was found around Brasilia in 1960, but its habitat has been overtaken by urban sprawl Urban sprawl (also known as suburban s ...

, ''Juscelinomys candango'' † ****

Rio Guaporé mouse The Rio Guaporé mouse or Guaporé akodont (''Juscelinomys guaporensis'') was formerly considered a rodent species in the family Cricetidae. It is known only from a small savanna in eastern Bolivia , image_flag = Bandera de B ...

, ''Juscelinomys guaporensis'' ****

Huanchaca mouse The Huanchaca mouse or Huanchaca akodont (''Juscelinomys huanchacae'') is a rodent species in the family Cricetidae. It is known from savannas in an area at an elevation of in Serrania Huanchaca, Noel Kempff Mercado National Park in eastern Bol ...

, ''Juscelinomys huanchacae'' ***Genus ''

Kunsia The woolly giant rat (''Kunsia tomentosus'') is a species of large burrowing rodent native to South America. No subspecies are currently recognised. It is the only member of the genus ''Kunsia''. Description The woolly giant rat is an exceptiona ...

'' - giant rats ****

Fossorial giant rat The fossorial giant rat (''Gyldenstolpia fronto'') is a species of rodent in the family Cricetidae. It is found in Argentina and Brazil but was determined extinct following a recent assessment of the conservation status of Sigmodontine rodents. ...

, ''Kunsia fronto'' **** Woolly giant rat, ''Kunsia tomentosus'' ***Genus '' Lenoxus'' - Andean rat ****

Andean rat The Andean rat (''Lenoxus apicalis''), or white-tailed akodont, is the only species in the genus ''Lenoxus''. It is a rodent in the tribe Akodontini found on the eastern slopes of the Andes of eastern Peru and western Bolivia. Examination of its ...

, ''Lenoxus apicalis'' ***Genus ''

Necromys ''Necromys'' is a genus of South American sigmodontine rodents allied to ''Akodon''. This genus has also been known as ''Cabreramys'' or more recently ''Bolomys'', and the northern grass mouse (''N. urichi'') has recently been transferred from ' ...

'' - bolo mice ****

Pleasant bolo mouse The pleasant bolo mouse, or pleasant akodont, (''Necromys amoenus'') is a species of rodent in the family Cricetidae. It is found on grassland at high altitudes in Bolivia and Peru. Description The pleasant bolo mouse is a small member of its g ...

, ''Necromys amoenus'' ****

Argentine bolo mouse The Argentine bolo mouse (''Necromys benefactus'') is a species of rodent in the family Cricetidae. It is endemic to central Argentina, where it is found in the pampa The Pampas (from the qu, pampa, meaning "plain") are fertile South Americ ...

, ''Necromys benefactus'' ****

Rufous-bellied bolo mouse The rufous-bellied bolo mouse or white-chinned akodont, (''Necromys lactens'') is a species of rodent in the family Cricetidae. It is found in Argentina and Bolivia where it inhabits the dry valleys of the eastern Andes. Its conservation status i ...

, ''Necromys lactens'' ****

Hairy-tailed bolo mouse The hairy-tailed bolo mouse or hairy-tailed akodont (''Necromys lasiurus'') is a South American rodent species of the family Cricetidae. It is found in Argentina, Bolivia, Brazil, and Paraguay. Description The hairy-tailed bolo mouse grows to a ...

, ''Necromys lasiurus'' ****

Paraguayan bolo mouse The Paraguayan bolo mouse or Paraguayan akodont (''Necromys lenguarum'') is a species of rodent in the family Cricetidae. According to the IUCN, it is present in Bolivia, Paraguay, and Peru, and possibly also in Argentina and Brazil. It is found ...

, ''Necromys lenguarum'' ****

Dark bolo mouse The dark bolo mouse or dark-furred akodont (''Necromys obscurus'') is a species of rodent in the family Cricetidae. There are two subspecies; one (ssp. ''scagliarum'') is found in eastern and central parts of Buenos Aires Province, Argentina, an ...

, ''Necromys obscurus'' ****

Spotted bolo mouse The spotted bolo mouse or Ecuadorian akodont (''Necromys punctulatus'') is a species of rodent in the family Cricetidae. It is known from Ecuador and may also occur in Colombia. Little is known of its status and range. Taxonomy ''Necromys punctu ...

, ''Necromys punctulatus'' ****

Temchuk's bolo mouse Temchuk's bolo mouse (''Necromys temchuki'') is a species of rodent in the family Cricetidae. It is found only in Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southe ...

, ''Necromys temchuki'' ****

Northern grass mouse The northern grass mouse, or northern akodont, (''Necromys urichi'') is a species of rodent in the family Cricetidae. It is found in Brazil, Colombia, Venezuela and Trinidad and Tobago. Description The northern grass mouse is a medium-sized spe ...

, ''Necromys urichi'' ***Genus ''

Oxymycterus ''Oxymycterus'' is a genus of rat-like rodents commonly known as hocicudos. They are endemic to South America. , the genus contains the following 16 species: * ''O. akodontius'' Argentine hocicudo * ''O. amazonicus'' Amazon hocicudo * ''O. ang ...

'' - hocicudos ****

Argentine hocicudo The Argentine hocicudo (''Oxymycterus akodontius'') is a species of rodent in the family Cricetidae. It is found only in northern Argentina in yungas (eastern Andean mountain forest) habitat. The exact population is unknown as only three specimen ...

, ''Oxymycterus akodontius'' ****

Amazon hocicudo The Amazonian hocicudo (''Oxymycterus amazonicus'') is a species of rodent in the family Cricetidae from South America. It is found in the Amazon basin in Brazil where it lives in moist lowland forest. It is a common species with a large ra ...

, ''Oxymycterus amazonicus'' ****

Angular hocicudo The angular hocicudo (''Oxymycterus angularis'') is a rodent species from South America. It is found in Brazil. References * Oxymycterus Mammals described in 1909 Taxa named by Oldfield Thomas {{Oxymycterus-stub ...

, ''Oxymycterus angularis'' **** Caparao hocicudo, ''Oxymycterus caparaoe'' ****

Atlantic Forest hocicudo The Atlantic Forest hocicudo (''Oxymycterus dasytrichus'') is a species of rodent in the family Cricetidae. It is found only in southeastern Brazil, where it lives in the Atlantic Forest and associated wetlands at altitudes from sea level Me ...

, ''Oxymycterus dasytrichus'' ****

Spy hocicudo The spy hocicudo (''Oxymycterus delator'') is a species of rodent in the family Cricetidae. It is found only in Paraguay Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paragu� ...

, ''Oxymycterus delator'' ****

Small hocicudo The small hocicudo (''Oxymycterus hiska'') is a little known species of rodent in the family Cricetidae. It is found in Bolivia and Peru on the eastern slopes of the Andes. Distribution The species inhabits humid montane forests, preferring pr ...

, ''Oxymycterus hiska'' ****

Hispid hocicudo The hispid hocicudo (''Oxymycterus hispidus'') is a rodent species from South America. It is found in Argentina and Brazil, in the Atlantic Forest The Atlantic Forest ( pt, Mata Atlântica) is a South American forest that extends along ...

, ''Oxymycterus hispidus'' ****

Quechuan hocicudo ''Oxymycterus hucucha'', also known as the Quechuan Hocicudo, is a species of rodent in the genus ''Oxymycterus'' of family Cricetidae from South America. It is found only in a small region of the Andes in central Bolivia, where it lives in cloud ...

, ''Oxymycterus hucucha'' ****

Incan hocicudo The Incan hocicudo (''Oxymycterus inca'') is a species of rodent in the family Cricetidae. It is found in Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, a ...

, ''Oxymycterus inca'' ****

Cook's hocicudo Cook's hocicudo (''Oxymycterus josei'') is a species of rodent in the family Cricetidae. It is found only in southern Uruguay Uruguay (; ), officially the Oriental Republic of Uruguay ( es, República Oriental del Uruguay), is a country in S ...

, ''Oxymycterus josei'' ****

Long-nosed hocicudo The long-nosed hocicudo (''Oxymycterus nasutus'') is a South American rodent species found in southeastern Brazil and Uruguay Uruguay (; ), officially the Oriental Republic of Uruguay ( es, República Oriental del Uruguay), is a country in ...

, ''Oxymycterus nasutus'' ****

Paramo hocicudo The Paramo hocicudo (''Oxymycterus paramensis'') is a species of rodent in the family Cricetidae. It is found in Argentina, Bolivia, and Peru. The Argentine hocicudo The Argentine hocicudo (''Oxymycterus akodontius'') is a species of rodent in ...

, ''Oxymycterus paramensis'' ****

Quaestor hocicudo The quaestor hocicudo (''Oxymycterus quaestor'') is a species of rodent in the family Cricetidae. It is found in southeastern Brazil and northeastern Argentina, where it lives in forest and moist and dry scrub. References Oxymycterus Ma ...

, ''Oxymycterus quaestor'' **** Robert's hocicudo, ''Oxymycterus roberti'' ****

Red hocicudo The red hocicudo (''Oxymycterus rufus'') is a rodent species from South America. It is found in Argentina, Brazil and Uruguay. Ecology The red hocicudo has been found to be one of the most heavily ectoparasite-infested rodents in a village studi ...

, ''Oxymycterus rufus'' ****''

Oxymycterus wayku ''Oxymycterus'' is a genus of rat-like rodents commonly known as hocicudos. They are endemic to South America. , the genus contains the following 16 species: * ''O. akodontius'' Argentine hocicudo * ''O. amazonicus'' Amazon hocicudo * ''O. angu ...

'' ***Genus ''

Podoxymys The Roraima mouse (''Podoxymys roraimae'') is a species of rodent in the family Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and ...

'' - Roraima mouse ****

Roraima mouse The Roraima mouse (''Podoxymys roraimae'') is a species of rodent in the family Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and ...

, ''Podoxymys roraimae'' ***Genus ''

Scapteromys ''Scapteromys'' is a genus of South American rodents in the tribe Akodontini of family Cricetidae. Three species are known, found in northern Argentina, southern Brazil, Paraguay and Uruguay. They are as follows: * Argentine swamp rat (''Scapter ...

'' - swamp rat ****

Argentine swamp rat The Argentine swamp rat (''Scapteromys aquaticus'') is a semiaquatic rodent species from South America. It is found in northeastern Argentina and Paraguay, where it lives in freshwater marshes and along the southern coast of the Río de la Plata ...

, ''Scapteromys aquaticus'' ****

Waterhouse's swamp rat Waterhouse's swamp rat (''Scapteromys tumidus'') is a semiaquatic rodent species from South America. It is found in southern Brazil, Uruguay and northern Argentina, where it lives in freshwater and salt marshes, as well as open grassland of ...

, ''Scapteromys tumidus'' ***Genus ''

Thalpomys ''Thalpomys'' is a genus of South American rodents in the tribe Akodontini of family Cricetidae. Two species are known, both found in the cerrado tropical savanna ecoregion of central Brazil Brazil ( pt, Brasil; ), officially the Federativ ...

'' - cerrado mice ****

Cerrado mouse The cerrado mouse (''Thalpomys cerradensis'') is a rodent species from South America. It is found in the cerrado of Brazil. Description The cerrado mouse has a head-and-body length of more than and is larger than the only other species in the g ...

, ''Thalpomys cerradensis'' ****

Hairy-eared cerrado mouse The hairy-eared cerrado mouse (''Thalpomys lasiotis'') or hairy-eared akodont, is a rodent species from South America. It is found in the cerrado grassland of Brazil. Description The hairy-eared cerrado mouse has a head-and-body length of less t ...

, ''Thalpomys lasiotis'' ***Genus '' Thaptomys'' - ebony akodont ****

Blackish grass mouse The blackish grass mouse (''Thaptomys nigrita'') also formerly called the ebony akodont, is a rodent species from South America. It is found in Argentina, Brazil, Paraguay and Uruguay. It is the only species in the genus ''Thaptomys''. ...

, ''Thaptomys nigrita'' **Tribe Phyllotini ***Genus ''

Andalgalomys ''Andalgalomys'' is a genus of rodent in the family Cricetidae. It contains the following species: * Olrog's chaco mouse (''Andalgalomys olrogi'') * Pearson's chaco mouse Pearson's chaco mouse (''Andalgalomys pearsoni'') is a species of roden ...

'' - chaco mice ****

Olrog's chaco mouse Olrog's chaco mouse (''Andalgalomys olrogi'') is a species of South American rodent in the family Cricetidae, endemic to Argentina. The natural habitat of the species is hot deserts. Its karyotype has 2n = 60. The species is named after Swedis ...

, ''Andalgalomys olrogi'' ****

Pearson's chaco mouse Pearson's chaco mouse (''Andalgalomys pearsoni'') is a species of rodent in the family Cricetidae. This mouse is found in the Gran Chaco ecoregion of southeastern Bolivia and western Paraguay at elevations up to 400 m. The species is named after ...

, ''Andalgalomys pearsoni'' ****

Roig's chaco mouse Roig's pericote or Roig's chaco mouse (''Andalgalomys roigi'') is a species of rodent in the family Cricetidae. Its karyotype has 2n = 60 and FN = 120. It may be a subspecies of Olrog's chaco mouse Olrog's chaco mouse (''Andalgalomys olrogi ...

, ''Andalgalomys roigi'' ***Genus '' Andinomys'' - Andean mouse **** Andean mouse, ''Andinomys edax'' ***Genus ''

Auliscomys ''Auliscomys'' is a genus of rodent in the family Cricetidae. It contains the following species: * Bolivian big-eared mouse (''Auliscomys boliviensis'') * Painted big-eared mouse (''Auliscomys pictus'') * Andean big-eared mouse The Andean bi ...

'' - big-eared mice ****

Bolivian big-eared mouse The Bolivian big-eared mouse (''Auliscomys boliviensis'') is a species of rodent in the family Muridae. It is found in Bolivia, Chile, and Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Per ...

, ''Auliscomys boliviensis'' ****

Painted big-eared mouse The painted big-eared mouse (''Auliscomys pictus'') is a species of rodent in the family Cricetidae. It is found in Bolivia and Peru, and possibly Chile Chile, officially the Republic of Chile, is a country in the western part of South A ...

, ''Auliscomys pictus'' ****

Andean big-eared mouse The Andean big-eared mouse (''Auliscomys sublimis'') is a species of rodent in the family Cricetidae. It is found in Argentina, Bolivia, Chile, and Peru , image_flag = Flag of Peru.svg , image_coat = Escudo naciona ...

, ''Auliscomys sublimis'' ***Genus ''

Calomys Vesper mice are rodents belonging to a genus ''Calomys''. They are widely distributed in South America. Some species are notable as the vectors of Argentinian hemorrhagic fever and Bolivian hemorrhagic fever. The genus was originally named ''Hes ...

'' - vesper mice ****

Bolivian vesper mouse The Bolivian vesper mouse (''Calomys boliviae'') is a species of rodent in the family Cricetidae. It is found in Argentina, Bolivia and perhaps Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional de ...

, ''Calomys boliviae'' ****

Crafty vesper mouse The crafty vesper mouse (''Calomys callidus'') is a species of rodent in the family Cricetidae. It is found in Argentina and Paraguay Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuair ...

, ''Calomys callidus'' ****

Large vesper mouse The large vesper mouse (''Calomys callosus'') is a South American rodent species of the family Cricetidae. It is found in Argentina, Bolivia, Brazil and Paraguay. Its karyotype has 2n = 50 and FN = 66. It was formerly synonymized with '' C. ...

, ''Calomys callosus'' ****''

Calomys cerqueirai ''Calomys cerqueirai'' is a species of rodent in the genus ''Calomys'' from southeastern Brazil. Distinct from other ''Calomys'' in its karyotype and characters of the fur, it is known only from two places in Minas Gerais. The karyotype was first ...

'' ****

Caatinga vesper mouse The caatinga vesper mouse (''Calomys expulsus'') (also known as the caatinga laucha or rejected vesper mouse) is a rodent species in the family Cricetidae from South America. It is endemic to eastern Brazil, where it is found in open savanna (cer ...

, ''Calomys expulsus'' **** Fecund vesper mouse, ''Calomys fecundus'' ****

Hummelinck's vesper mouse Hummelinck's vesper mouse (''Calomys hummelincki'') is a species of rodent in the family Cricetidae. It is found in Aruba, Brazil, Colombia, the Netherlands Antilles nl, In vrijheid verenigd"Unified by freedom" , national_anthem = , co ...

, ''Calomys hummelincki'' ****

Small vesper mouse The small vesper mouse (''Calomys laucha'') is a rodent species from South America. It is found in Argentina, Bolivia, Brazil, Paraguay and Uruguay. It is one of the hosts of hantavirus, causing hantavirus pulmonary syndrome Hantavirus pulmonar ...

, ''Calomys laucha'' ****

Andean vesper mouse The Andean vesper mouse (''Calomys lepidus'') is a species of rodent in the family Cricetidae. It is found in Argentina, Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor ...

, ''Calomys lepidus'' ****

Drylands vesper mouse The drylands vesper mouse (''Calomys musculinus'') is a species of rodent in the family Cricetidae. It is found in Argentina and Paraguay Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavak ...

, ''Calomys musculinus'' ****

Peruvian vesper mouse The Peruvian vesper mouse (''Calomys sorellus'') is a species of rodent in the family Cricetidae. It is found only in Peru. References * Baillie, J. 1996.Calomys sorellus 2006 IUCN Red List of Threatened Species. Downloaded on 19 July 2007. ...

, ''Calomys sorellus'' ****

Delicate vesper mouse The delicate vesper mouse (''Calomys tener'') is a South American rodent species of the family Cricetidae. It is found in Argentina, Bolivia and Brazil. Its karyotype A karyotype is the general appearance of the complete set of metaphase chrom ...

, ''Calomys tener'' ****

Tocantins vesper mouse The Tocantins vesper mouse (''Calomys tocantinsi'') is a South American rodent species of the family Cricetidae. It is found in Brazil. Its karyotype has 2n = 46 and FNa FNA may refer to: * Algerian National Front (French: ') * β-FNA, beta-fun ...

, ''Calomys tocantinsi'' ****

Córdoba vesper mouse The Córdoba vesper mouse or Córdoba laucha (''Calomys venustus'') is a South American rodent species of the family Cricetidae. It is endemic to the area of Córdoba Province, central Argentina Argentina (), officially the Argentine Re ...

, ''Calomys venustus'' ***Genus ''

Chinchillula The Altiplano chinchilla mouse or achallo (''Chinchillula sahamae'') is a species of rodent in the family Cricetidae. It is the only species in the genus ''Chinchillula''. It is found in Argentina, Bolivia, Chile, and Peru , image_flag ...

'' - altiplano chinchilla mouse ****

Altiplano chinchilla mouse The Altiplano chinchilla mouse or achallo (''Chinchillula sahamae'') is a species of rodent in the family Cricetidae. It is the only species in the genus ''Chinchillula''. It is found in Argentina, Bolivia, Chile, and Peru , image_flag ...

, ''Chinchillula sahamae'' ***Genus ''

Eligmodontia The genus ''Eligmodontia'' consists of five or six species of South American sigmodontine mice restricted to Bolivia, Chile, and Argentina. Species of ''Eligmodontia'' occur along the eastern side of the Andes Mountains, in Patagonia, and in th ...

'' - silky desert mice ****

Monte gerbil mouse The Monte gerbil mouse or Monte laucha (''Eligmodontia moreni'') is a species of rodent in the family Cricetidae. It is found only in Argentina. References * Baillie, J. 1996.Eligmodontia moreni 2006 IUCN Red List of Threatened Species. Do ...

, ''Eligmodontia moreni'' **** Andean gerbil mouse, ''Eligmodontia puerulus'' ****''

Eligmodontia hirtipes The genus ''Eligmodontia'' consists of five or six species of South American sigmodontine mice restricted to Bolivia, Chile, and Argentina. Species of ''Eligmodontia'' occur along the eastern side of the Andes Mountains, in Patagonia, and in t ...

'' (recently separated from ''Eligmodontia puerulus'') ****

Morgan's gerbil mouse Morgan's gerbil mouse (''Eligmodontia morgani''), also known as the western Patagonian laucha, is a South American species of rodent in the family Cricetidae. It is named for J. P. Morgan, one of the sponsors of the expedition that first ident ...

, ''Eligmodontia morgani'' **** Eastern Patagonian laucha, ''Eligmodontia typus'' **** Highland gerbil mouse, ''Eligmodontia (typus) bolsonensis'' ***Genus ''

'' - chinchilla mice **** Patagonian chinchilla mouse, ''Euneomys chinchilloides'' **** Burrowing chinchilla mouse, ''Euneomys fossor'' ****

Biting chinchilla mouse The biting chinchilla mouse (''Euneomys mordax'') is a species of rodent in the family Cricetidae. It is found in west central Argentina and nearby areas of Chile, where it inhabits highland meadow A meadow ( ) is an open habitat, or field, ...

, ''Euneomys mordax'' ****

Peterson's chinchilla mouse Peterson's chinchilla mouse (''Euneomys petersoni'') is a species of rodent in the family Cricetidae. It is found in west central and southern Argentina and nearby areas of Chile Chile, officially the Republic of Chile, is a country in th ...

, ''Euneomys petersoni'' ***Genus '' Galenomys'' - Garlepp's mouse ****

Garlepp's mouse Garlepp's mouse (''Galenomys garleppi'') is a species of rodent in the family Cricetidae. It is the only species in the genus ''Galenomys''. It is found in western Bolivia , image_flag = Bandera de Bolivia (Estado).svg , ...

, ''Galenomys garleppi'' ***Genus ''

Graomys ''Graomys'' is a genus of rodent in the family Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World rats and mice. At almos ...

'' - leaf-eared mice ****

Central leaf-eared mouse The central leaf-eared mouse (''Graomys chacoensis'') is a species of rodent in the family Cricetidae. It is known only from central Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a co ...

, ''Graomys centralis'' ****

Pale leaf-eared mouse The pale leaf-eared mouse (''Graomys domorum'') is a species of rodent in the family Cricetidae. It is found in Argentina and Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricol ...

, ''Graomys domorum'' ****

Edith's leaf-eared mouse Edith's leaf-eared mouse (''Graomys edithae'') is a species of rodentin the family Cricetidae. It is known only from Argentina, where it was found in a montane grassland Montane grasslands and shrublands is a biome defined by the World Wildlif ...

, ''Graomys edithae'' ****

Gray leaf-eared mouse The gray leaf-eared mouse (''Graomys griseoflavus'') is a rodent species from South America. It is found in Argentina, Bolivia, Brazil and Paraguay; its habitat includes the Gran Chaco. This is a variable and widely distributed species that can ...

, ''Graomys griseoflavus'' ***Genus '' Ichthyurodon'' † ****'' Ichthyurodon ameghinoi'' † ***Genus ''

'' - Chilean climbing mouse **** Chilean climbing mouse, ''Irenomys tarsalis'' ***Genus ''

Loxodontomys ''Loxodontomys'' is a genus of South American rodents in the tribe Phyllotini of family Cricetidae. Two species are known, found in Argentina and Chile. They are as follows: * Southern big-eared mouse (''Loxodontomys micropus'') * Pikumche peric ...

'' ****

Southern big-eared mouse The southern big-eared mouse (''Loxodontomys micropus''), also known as the southern pericote, is a species of rodent in the family Cricetidae. It is found in Argentina and Chile, and is one of only two species in its genus. The type specim ...

, ''Loxodontomys micropus'' ****

Pikumche pericote The Pikumche pericote (''Loxodontomys pikumche'') is a species of rodent in the family Cricetidae. It is known only from central Chile, where its range includes xeric shrublands (the matorral 300px, Springtime in Chilean matorral a few kilom ...

, ''Loxodontomys pikumche'' ***Genus '' Neotomys'' - Andean swamp rat ****

Andean swamp rat The Andean swamp rat (''Neotomys ebriosus'') is a species of rodent in the family Cricetidae. It is the only species in the genus ''Neotomys''. It is found in Argentina, Bolivia, Chile, and Peru , image_flag = Flag of Peru.s ...

, ''Neotomys ebriosus'' ***Genus '' Olympicomys'' † ****'' Olympicomys vossi'' † ***Genus ''

Phyllotis ''Phyllotis'' is a genus of rodent in the family Cricetidae. These mice are commonly confused with ''Auliscomys, Graomys'' and ''Loxodontomys.'' ''.'' In order to tell these genera apart, one must look at the tail. Species in the genus ''Phy ...

'' - leaf-eared mice ****

Friendly leaf-eared mouse The friendly leaf-eared mouse (''Phyllotis amicus'') is a species of rodent in the family Cricetidae. It is found only in Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_ ...

, ''Phyllotis amicus'' ****

Andean leaf-eared mouse The Andean leaf-eared mouse (''Phyllotis andium'') is a species of rodent in the family Cricetidae. It is found in Ecuador and Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , ot ...

, ''Phyllotis andium'' ****

Anita's leaf-eared mouse Anita's leaf-eared mouse (''Phyllotis anitae'') is a species of rodent in the family Cricetidae. It was discovered in Tucumán Province in northwestern Argentina in alder forest of the upper part of the Southern Andean Yungas ecoregion, on the ea ...

, ''Phyllotis anitae'' ****

Buenos Aires leaf-eared mouse The Buenos Aires leaf-eared mouse (''Phyllotis bonariensis'') is a species of rodent in the family Cricetidae. It is found only in Argentina. References Phyllotis Mammals of Argentina Mammals described in 1964 Taxonomy articles create ...

, ''Phyllotis bonariensis'' ****

Capricorn leaf-eared mouse The capricorn leaf-eared mouse (''Phyllotis caprinus'') is a species of rodent in the family Cricetidae. It is found in Argentina and Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizo ...

, ''Phyllotis caprinus'' ****

Darwin's leaf-eared mouse Darwin's leaf-eared mouse (''Phyllotis darwini'') is a species of rodent in the family Cricetidae. It has terrestrial habits and is endemic to coastal central and northern Chile. It is also found in the Atacama Desert The Atacama Desert ( e ...

, ''Phyllotis darwini'' ****

Definitive leaf-eared mouse The definitive leaf-eared mouse (''Phyllotis definitus'') is a species of rodent in the family Cricetidae. It is found only in west central Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del P ...

, ''Phyllotis definitus'' ****

Haggard's leaf-eared mouse Haggard's leaf-eared mouse (''Phyllotis haggardi'') is a species of rodent in the family Cricetidae. It is found only in Ecuador. References * Baillie, J. 1996.Phyllotis haggardi 2006 IUCN Red List of Threatened Species. Downloaded on 9 Jul ...

, ''Phyllotis haggardi'' ****

Lima leaf-eared mouse The Lima leaf-eared mouse (''Phyllotis limatus'') or Lima pericote is a species of rodent in the family Cricetidae. It is found in a variety of habitats on the western slopes of the Andes from northern Chile to west-central Peru at elevations ...

, ''Phyllotis limatus'' ****

Master leaf-eared mouse The master leaf-eared mouse (''Phyllotis magister'') is a species of rodent in the family Cricetidae. It is found in Chile and Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , o ...

, ''Phyllotis magister'' ****

Osgood's leaf-eared mouse Osgood's leaf-eared mouse (''Phyllotis osgoodi'') is a species of rodent in the family Cricetidae. It is found only in the Altiplano of northeastern Chile. The species is named after American zoologist Wilfred Hudson Osgood. References

*Muss ...

, ''Phyllotis osgoodi'' **** Bunchgrass leaf-eared mouse, ''Phyllotis osilae'' ****

Wolffsohn's leaf-eared mouse Wolffsohn's leaf-eared mouse (''Phyllotis wolffsohni'') is a species of rodent in the family Cricetidae. It is found only in Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricol ...

, ''Phyllotis wolffsohni'' ****

Yellow-rumped leaf-eared mouse The yellow-rumped leaf-eared mouse (''Phyllotis xanthopygus'') otherwise known as the Patagonian leaf-eared mouse is a species of rodent in the family Cricetidae and order Rodentia. It is the most widespread member of the genus. Description ' ...

, ''Phyllotis xanthopygus'' ***Genus ''

'' - puna mouse ****

Eastern puna mouse The eastern puna mouse (''Punomys kofordi'') is a species of rodent in the family Cricetidae. It is endemic to southern Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_sy ...

, ''Punomys kofordi'' ****

Puna mouse The puna mouse (''Punomys lemminus'') is a species of rodent in the family Cricetidae. It is endemic to southern Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol ...

, ''Punomys lemminus'' ***Genus ''

'' - bunny rat ****

Bunny rat The bunny rat, or hairy-soled conyrat (''Reithrodon auritus'') is a species of rodent in the family Cricetidae, native to southern South America. Description The bunny rat is a heavily built rat-like rodent, with a total length of , including the ...

, ''Reithrodon auritus'' ****

Naked-soled conyrat The naked-soled conyrat (''Reithrodon typicus'') is a species of rodent in the family Cricetidae. It is an herbivore of grasslands in northern Argentina, southern Brazil, and Uruguay. Its karyotype A karyotype is the general appearance of the ...

, ''Reithrodon typicus'' ***Genus ''

Salinomys The delicate salt flat mouse, ''Salinomys delicatus'', (in Spanish, el ratón delicado de los salares) is a sigmodontine rodent species in the family Cricetidae from South America. It is the only species in the genus ''Salinomys''. Its habitat ...

'' ****

Delicate salt flat mouse The delicate salt flat mouse, ''Salinomys delicatus'', (in Spanish, el ratón delicado de los salares) is a sigmodontine rodent species in the family Cricetidae from South America. It is the only species in the genus ''Salinomys''. Its habitat ...

, ''Salinomys delicatus'' ***Genus '' Tafimys'' † ****'' Tafimys powelli'' ***Genus ''

Tapecomys The primordial tapecua (''Tapecomys primus'') is a species of medium-sized rodent in the family Cricetidae. The type locality is in southeastern Bolivia. It is the only known species of the genus ''Tapecomys''. Two specimens were found in 1991 in ...

'' - primordial tapecua ****

Primordial tapecua The primordial tapecua (''Tapecomys primus'') is a species of medium-sized rodent in the family Cricetidae. The type locality is in southeastern Bolivia. It is the only known species of the genus ''Tapecomys''. Two specimens were found in 1991 in ...

, ''Tapecomys primus'' ''Incertae sedis'' *Genus ''

Juliomys ''Juliomys'' is a genus of South American rodents of the family Cricetidae. Five species are known, all found in Argentina and Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest countr ...

'' **'' Juliomys ossitenuis'' **'' Juliomys pictipes'' **'' Juliomys rimofrons'' *Genus '' Megaoryzomys'' † ** Galápagos giant rat, ''Megaoryzomys curioi'' †

References

* *

External links

* {{Taxonbar, from=Q133373 Cricetidae Extant Zanclean first appearances Mammal subfamilies Taxa named by Johann Andreas Wagner