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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 the Chaco thorn forest of South America. They can be found in arid and semiarid habitats and in both high and low elevation areas. These rodents are commonly known as gerbil mice or by their local name lauchas. Sometimes they are also called silky desert mice, highland desert mice or silky-footed mice. The closest living relatives are probably the chaco mice (''Andalgalomys''), the leaf-eared mice ('' Graomys'', ''Paralomys'' and ''Phyllotis''), and ''Salinomys''. Taxonomy, systematics and evolution The genus receives its name from the occlusal (chewing surface) pattern of the molars and is derived from the Ancient Greek ''eliktos'' (ἑλικτός, "winding") and ''odontas'' (ὀδόντας, "toothed"). The systematics and taxonomy of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sigmodontinae
The rodent subfamily Sigmodontinae includes New World rats and mice, with at least 376 species. Many authorities include the Neotominae and Tylomyinae 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, but the genera are predominantly South American, such as brucies. They invaded South America from Central America as part of the Great American Interchange 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 niches that the Murinae occupy in the Old World. The "Thomasomyini" from the Atlantic Forest of Brazil are generally thought to be not especially related to the "real" Thomasomyini from the northern Andes and the Amazon rainforest. The genera ''Wiedomys'' and '' Sigmodon'' are generally placed in their own tribe, and the "p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eligmodontia Typus
''Eligmodontia typus'' is a species of rodent in the family Cricetidae. It is found in Argentina and possibly also Chile. The northernmost population might represent a distinct species, ''E. bolsonensis'', to which the common name highland gerbil mouse would apply. The lowland population would then be known as eastern Patagonian gerbil mouse or eastern Patagonian laucha. References Eligmodontia Mammals of Argentina Mammals of Chile Mammals of the Andes Mammals described in 1837 Taxa named by Frédéric Cuvier Taxonomy articles created by Polbot {{Sigmodontinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eligmodontia Moreni
The Monte gerbil mouse or Monte laucha (''Eligmodontia moreni'') 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 southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th .... References * Baillie, J. 1996.Eligmodontia moreni 2006 IUCN Red List of Threatened Species. Downloaded on 19 July 2007. *Musser, 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, Baltimore. Eligmodontia Mammals of the Andes Mammals of Argentina Mammals described in 1896 Taxa named by Oldfield Thomas Taxonomy articles created by Polbot {{Sigmodontinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eligmodontia Morgani
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 identified the species. Description Morgan's gerbil mouse is a slender, mouse-like rodent with large ears and elongated hind feet. Adults measure from in total length, including a tail about long, and weigh from . Females are slightly larger than males. The fur is long and silky, and is a dull brownish-grey over the upper body, and pure white on the underside; a distinct line of yellowish fur runs along the animal's sides separating the brown from the white fur. The tail is hairy, and darker coloured above than below. Unlike most other species in the genus, the hind feet have a thick coat of fur on the soles. Distribution and habitat Morgan's gerbil mouse is found in southern Argentina, from southern Mendoza Province and Neuquén and Río N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eligmodontia Puerulus
The Andean gerbil mouse or Altiplano laucha (''Eligmodontia puerulus'') 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 nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi .... References * Baillie, J. 1996.Eligmodontia puerulus 2006 IUCN Red List of Threatened Species. Downloaded on 19 July 2007. *Musser, 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, Baltimore. Eligmodontia Mammals of the Andes Mammals of Argentina Mammals of Bolivia Mammals of Chile Mammals of Peru Mammals described in 1896 Taxonomy articles created by Polbot {{Sigmodontinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Greek
Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic period (), and the Classical period (). Ancient Greek was the language of Homer and of fifth-century Athenian historians, playwrights, and philosophers. It has contributed many words to English vocabulary and has been a standard subject of study in educational institutions of the Western world since the Renaissance. This article primarily contains information about the Epic and Classical periods of the language. From the Hellenistic period (), Ancient Greek was followed by Koine Greek, which is regarded as a separate historical stage, although its earliest form closely resembles Attic Greek and its latest form approaches Medieval Greek. There were several regional dialects of Ancient Greek, of which Attic Greek developed into Koi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paralomys
The gerbil leaf-eared mouse (''Phyllotis gerbillus'') 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 = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi .... It has been discovered that ''P. amicus'' and ''P. gerbillius'' are closely related as sister species. However, ''P. gerbilllius'' belongs to the clade ''Phyllotis'', which contains ''amicus'', ''andium'', ''and gerbellius'' while ''wolffsohni'' belongs to ''Tapecomys''. Measurements of 35 ''P. gerbillus'' adults were as follows; total length of 83.2 ± 0.72 (77-96 in ); tail 78.1 ± 1.13 (62-90 in); greatest length of skull, 23.44 ± 0.09 (22.2 - 24.5 in); zygomatic breadth, 12.32 ± 0.04 (11.7 -13.0 in) and weight, 17.37 ± 0.50 (14-25). This data excluded pregnant females. References *Musser, G. G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ''Phyllotis'' have a penicillate tip on their tail which is not present in the other two genera. Tails in the genus Phyllotis are also less than the length of its head and body combined whereas in ''Graomys'', tails are longer than the head and body combined . '' Phyllotis xanthopygus'' was found at the summit of Volcán Llullaillaco (6739 m), which is the highest altitude a mammal has yet been found in nature. It contains the following species: * Los Alisos leaf-eared mouse (''Phyllotis alisosiensis'') * Friendly leaf-eared mouse (''Phyllotis amicus'') * Andean leaf-eared mouse (''Phyllotis andium'') * Anita's leaf-eared mouse (''Phyllotis anitae'') * Buenos Aires leaf-eared mouse (''Phyllotis bonariensis'') * Capricorn leaf-eared mouse (''Ph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 is scrublands bordering salt flats (such as those of the Salinas Grandes) in the Monte Desert area of central western Argentina at elevations around 400 m. The closest relatives of the species are the chaco mice (''Andalgalomys'').Steppan, S.J.; Ramirez, O.; Banbury, J.; ''et al.'' 2007. A molecular reappraisal of the systematics of the leaf-eared mice ''Phyllotis'' and their relatives. In: Kelt, D.A., E.P. Lessa, J. Salazar-Bravo & J.L. Patton (eds.), The Quintessential Naturalist: Honoring the Life and Legacy of Oliver P. Pearson. University of California Publications in Zoology. Volume 134, pp. 799–826. University of California Press, Berkeley. http://escholarship.org/uc/item/9g62053v#page-812 Karyotype Its karyotype has 2n = 18 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molar (tooth)
The molars or molar teeth are large, flat teeth A tooth ( : teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, te ... at the back of the mouth. They are more developed in mammal, mammals. They are used primarily to comminution, grind food during mastication, chewing. The name ''molar'' derives from Latin, ''molaris dens'', meaning "millstone tooth", from ''mola'', millstone and ''dens'', tooth. Molars show a great deal of diversity in size and shape across mammal groups. The third molar of humans is sometimes vestigial. Human anatomy In humans, the molar teeth have either four or five cusp (dentistry), cusps. Adult humans have 12 molars, in four groups of three at the back of the mouth. The third, rearmost molar in each group is called a Third molar, wisdom tooth. It is the last tooth to appear, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( , often referred to as the '' Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing a faunal interchange between the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
