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Neotomini
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, packrats, and grasshopper mice. Neotomines are related to the other two subfamilies of mice in the New World, the Sigmodontinae and Tylomyinae. Many authorities place them all in a single subfamily, Sigmodontinae. Taxonomy *SUBFAMILY NEOTOMINAE **Tribe Baiomyini ***Genus ''Baiomys'' - pygmy mice **** Southern pygmy mouse, ''Baiomys brunneus'' **** Mexican pygmy mouse, ''Baiomys musculus'' **** Northern pygmy mouse, ''Baiomys taylori'' ***Genus '' Scotinomys'' - brown mice **** Alston's brown mouse, ''Scotinomys teguina'' **** Chiriqui brown mouse, ''Scotinomys xerampelinus'' **Tribe Neotomini ***Genus ''Neotoma'' - pack rats ****Subgenus ''Neotoma'' ***** White-throated woodrat, ''Neotoma albigula'' ***** Tamaulipan woodrat, ''Neotoma angustapalata'' *****� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New World Rats And Mice
The New World rats and mice are a group of related rodents found in North and South America. They are extremely diverse in appearance and ecology, ranging from the tiny '' Baiomys'' to the large '' Kunsia''. They represent one of the few examples of muroid rodents (along with the voles) in North America, and the only example of muroid rodents to have made it into South America. The New World rats and mice are often considered part of a single subfamily, Sigmodontinae, but the recent trend among muroid taxonomists is to recognize three separate subfamilies. This strategy better represents the extreme diversity of species numbers and ecological types. Some molecular phylogenetic studies have suggested that the New World rats and mice are not a monophyletic group, but this is yet to be confirmed. Their closest relatives are clearly the hamsters and voles. The New World rats and mice are divided into 3 subfamilies, 12 tribes, and 84 genera. Classification *Family Cricetida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene followed the Oligocene and preceded the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by distinct global events but by regionally defined transitions from the warmer Oligocene to the cooler Pliocene Epoch. During the Early Miocene, Afro-Arabia collided with Eurasia, severing the connection between the Mediterranean and Indian Oceans, and allowing the interchange of fauna between Eurasia and Africa, including the dispersal of proboscideans and Ape, hominoids into Eurasia. During the late Miocene, the conn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alston's Brown Mouse
Alston's brown mouse, also called Alston's singing mouse, short-tailed singing mouse, or singing mouse (''Scotinomys teguina''), is a species of rodent in the family Cricetidae. It is found in Central America, from Chiapas, Mexico, to western Panama. This species produces vocalizations in both the sonic and ultrasonic range that are thought to be an important component of its communication behavior.Reid, Fiona A. (1997): "''A field guide to the mammals of central america and southeast mexico''. Oxford University Press, New York Distribution and habitat ''S. teguina'' is exclusively found in the highland forests of southern North America and throughout Central America, from Chiapas, Mexico to western Panama, at elevations between 1100 and 2950 meters.Hooper, Emmet T., and Carleton Michael D. (1976): ''Reproduction, growth and development in two contiguously allopatric rodent species, genus Scotinomys''. Miscellaneous Publications Museum of Zoology, University of Michigan, 665:1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Pygmy Mouse
The southern pygmy mouse (''Baiomys brunneus'') is a species of rodent in the family Cricetidae. It is found in El Salvador, Guatemala, Honduras, Mexico, and Nicaragua. Taxonomy This species was originally described as a subspecies of the Mexican pygmy mouse, ''Baiomys musculus''. It was considered a subspecies of ''B. musculus'' until 2021, when it was determined that most populations formerly considered part of ''Baiomys musculus'' should instead belong to ''Baiomys brunneus''. The Trans-Mexican Volcanic Belt and the Balsas River, form a barrier between ''Baiomys musculus'' to the west and ''Baiomys brunneus'' to the east. This species, as well as ''B. musculus'', are likely more basal within ''Baiomys'' than the northern pygmy mouse, since they moreso resemble fossil species. There are seven recognized subspecies: *''Baiomys brunneus brunneus'' J. A. Allen & F. M. Chapman, 1897 - native to central Veracruz, eastern Puebla, and a small part of northernmost Oaxaca *''Baiomys b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexican Pygmy Mouse
The Mexican pygmy mouse (''Baiomys musculus'') is a species of rodent native to Mexico. Taxonomy In 2021 it was determined that seven of the eight recognized subspecies formerly considered part of ''Baiomys musculus'' should instead belong to ''Baiomys brunneus''. The Trans-Mexican Volcanic Belt and the Balsas River, form a barrier between ''Baiomys musculus'' to the west and ''Baiomys brunneus'' to the east. This species, as well as ''B. musculus'', are likely more basal within ''Baiomys'' than the northern pygmy mouse, since they moreso resemble fossil species. This species has no accepted subspecies. Description The hair of this species tends to be olive-brown to dark brown on top and lighter whitish to grayish on the bottom. The body length of this species is , with a tail. It is larger on average than ''B. brunneus''. Uncharacteristically of other members in the family Cricetidae they have 14 cheek teeth instead of 12. Ecology Similar to ''Baiomys brunneus'', this speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Pygmy Mouse
The northern pygmy mouse (''Baiomys taylori'') is a species of rodent in the family Cricetidae. It is known as ''ratón-pigmeo norteño'' in the Spanish-speaking areas of its range. It is found in Mexico and the United States. It is the smallest rodent in North America. Taxonomy This species was originally described as a member of the genus '' Hesperomys''. Afterwards it would be placed in the genus ''Peromyscus'' and even the hamster genus ''Cricetus''. In 1907, the American naturalist Edgar Mearns elevated the subgenus ''Baiomys'' to genus-level and included this species in it alongside '' Baiomys musculus''. It is likely more recent than ''Baiomys musculus'' and '' Baiomys brunneus'', as it less closely resembles fossil members of this genus. There are seven subspecies: *''Baiomys taylori allex'' ( Osgood, 1904 - native to the lowlands of southernmost Nayarit, western Jalisco, Colima, and southwestern Michoacán *''Baiomys taylori analogus'' (Osgood, 1917) - native to northe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scotinomys
''Scotinomys'' is a genus of rodent, the singing mice, in the family Cricetidae. Together with ''Baiomys ''Baiomys'', the New World pygmy mice, is a genus of rodents in the family Cricetidae. Together with '' Scotinomys'', it forms the tribe Baiomyini. It contains the smallest rodents in North America. It currently contains three extant species: ...'', it forms the tribe Baiomyini. It contains the following species: * Alston's brown mouse (''Scotinomys teguina'') * Chiriqui brown mouse (''Scotinomys xerampelinus'') They are found in mountainous areas in Central America, at altitudes of 1000 m to at least 3500 m. As their common name indicates, they are notable for their acoustic communication. They are insectivorous. The two species show substantial divergence in behaviour and reproduction,Hooper, E. T., & Carleton, M. D. (1976). Reproduction, growth and development in two contiguously allopatric rodent species, genus ''Scotinomys''. ''Miscellaneous Publications of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neotoma
A pack rat or packrat, also called a woodrat or trade rat, are any species in the North and Central American rodent genus ''Neotoma''. Pack rats have a rat-like appearance, with long tails, large ears, and large, black eyes. Pack rats are noticeably larger than deer mice, harvest mice, and grasshopper mice, and are usually somewhat larger than cotton rats. Species ''Neotoma'' includes three subgenera, Daggers (†) mark extinct species: * Subgenus ''Neotoma'' ** '' Neotoma albigula'' - white-throated woodrat *** '' Neotoma albigula varia'' - Turner Island woodrat ** '' Neotoma angustapalata'' - Tamaulipan woodrat ** '' Neotoma bryanti'' - Bryant's woodrat *** '' Neotoma bryanti anthonyi'' - Anthony's woodrat *** †'' Neotoma bryanti bunkeri'' - Bunker's woodrat *** †'' Neotoma bryanti martinensis'' - San Martín Island woodrat ** '' Neotoma chrysomelas'' - Nicaraguan woodrat ** '' Neotoma devia'' - Arizona woodrat ** '' Neotoma ferruginea'' - Guatemala woodrat ** †'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiriqui Brown Mouse
The Chiriqui brown mouse (''Scotinomys xerampelinus''), also known as the long-tailed singing mouse, is a species of rodent in the family Cricetidae. It is found in cloud forest and paramo at elevations of 2100 to 3400 m in Costa Rica and Panama. Male Chiriqui brown mice sing to attract mates and to warn off other males from their territories. Their songs also serve to repel members of the related, smaller, competing species, '' S. teguina''. Additionally, the length and aggression of male Chiriqui brown mice's calls are modulated by androgen An androgen (from Greek ''andr-'', the stem of the word meaning ) is any natural or synthetic steroid hormone that regulates the development and maintenance of male characteristics in vertebrates by binding to androgen receptors. This includes .... References Scotinomys Rodents of Central America Mammals described in 1902 Páramo fauna Taxonomy articles created by Polbot Taxa named by Outram Bangs Vertebrates of Costa Rica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 three of these subfamilies in a single subfamily, Sigmodontinae. List of Species *SUBFAMILY TYLOMYINAE **Tribe Nyctomyini ***Genus '' Otonyctomys'' **** Hatt's vesper rat, ''Otonyctomys hatti'' ***Genus '' Nyctomys'' **** Sumichrast's vesper rat, ''Nyctomys sumichrasti'' **Tribe Tylomyini ***Genus '' Tylomys'' **** Chiapan climbing rat, ''Tylomys bullaris'' **** Fulvous-bellied climbing rat, ''Tylomys fulviventer'' **** Mira climbing rat, ''Tylomys mirae'' **** Peters's climbing rat, ''Tylomys nudicaudus'' **** Panamanian climbing rat, ''Tylomys panamensis'' **** Tumbala climbing rat, ''Tylomys tumbalensis'' **** Watson's climbing rat, ''Tylomys watsoni'' ***Genus '' Ototylomys'' **** Big-eared climbing rat, ''Ototylomys phyllotis'' *** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
