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Microsciurus
''Microsciurus'' or dwarf squirrels is a genus of squirrels from the tropical regions of Central and South America. Taxonomy and systematics Recent DNA analysis has shown that there is some confusion regarding the traditional classification of the species in the genus ''Microsciurus'', and that the genus may be polyphyletic. Currently, there are four species recognized: *Central American dwarf squirrel (''Microsciurus alfari'') Allen, 1895, Costa Rica, Nicaragua, Panama, northern Colombia *Amazon dwarf squirrel (''Microsciurus flaviventer'') Gray, 1867, western Amazon basin *Western dwarf squirrel (''Microsciurus mimulus'') Thomas, 1898, Ecuador, Colombia, Panama *Santander dwarf squirrel (''Microsciurus santanderensis'') Hernández-Camacho, 1957, central Colombia A 2020 paper published on the taxonomy of Sciurinae split ''Microsciurus'' into three genera, one currently unnamed. The paper included genetic sampling from all species except Santander dwarf squirrel and '' (Micro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsciurus
''Microsciurus'' or dwarf squirrels is a genus of squirrels from the tropical regions of Central and South America. Taxonomy and systematics Recent DNA analysis has shown that there is some confusion regarding the traditional classification of the species in the genus ''Microsciurus'', and that the genus may be polyphyletic. Currently, there are four species recognized: *Central American dwarf squirrel (''Microsciurus alfari'') Allen, 1895, Costa Rica, Nicaragua, Panama, northern Colombia *Amazon dwarf squirrel (''Microsciurus flaviventer'') Gray, 1867, western Amazon basin *Western dwarf squirrel (''Microsciurus mimulus'') Thomas, 1898, Ecuador, Colombia, Panama *Santander dwarf squirrel (''Microsciurus santanderensis'') Hernández-Camacho, 1957, central Colombia A 2020 paper published on the taxonomy of Sciurinae split ''Microsciurus'' into three genera, one currently unnamed. The paper included genetic sampling from all species except Santander dwarf squirrel and '' (Micro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amazon Dwarf Squirrel
The Amazon dwarf squirrel (''Microsciurus flaviventer'') is a chipmunk-sized tree squirrel native to South America. Description As its name suggests, the Amazon dwarf squirrel is relatively small, with a head-body length of and a tail long. Adults weigh between , with males being slightly larger than females. The fur varies from reddish to dull brown, fading gradually to yellow or greyish on the underparts. There is a distinctive patch of pale yellow fur behind the ears, while the tail has faint yellowish bands and white frosting. The limbs are unusually long for tree squirrels. In the forelimbs, the humerus and radius are of equal length, an adaptation thought to increase the squirrel's ability to climb large trees, compensating for a lack of shoulder mobility. The longer hindlimbs allow for stronger muscles, so that the squirrel can leap over larger gaps, relative to its size, than more typically sized squirrels can. Distribution and habitat The squirrels are found in the up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Dwarf Squirrel
The western dwarf squirrel (''Microsciurus mimulus'') is a small tree squirrel in the genus ''Microsciurus'' and tribe ''Sciurini'' found in Colombia, Ecuador, and Panama Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Cos .... The table below lists the three recognized subspecies of ''Microsciurus mimulus'', along with any synonyms associated with each subspecies: References Microsciurus Mammals of Colombia Mammals described in 1898 Taxa named by Oldfield Thomas Taxonomy articles created by Polbot {{Squirrel-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsciurus Alfari
The Central American dwarf squirrel, also known as Alfaro's pygmy squirrel,(''Microsciurus alfari'') is a small tree squirrel in the genus ''Microsciurus'' and tribe Sciurini found in Colombia, Costa Rica, Nicaragua, and Panama. No species of squirrel within this genus are endangered, but they are rarely seen because they are shy and live hidden lives. This suggests that their population numbers may be larger than documented.Allen, J. (1895). Descriptions of New American Mammals. ''Bulletin - American Museum of Natural History'', ''7'', 333. https://www.biodiversitylibrary.org/page/26894480#page/363/mode/1up Description Central American dwarf squirrels are not as small as their name suggests. In fact, their body measurements are close to that of the Red Squirrel and Gray Squirrel, with a head-and-body length about 15 cm (5.9 in) with a 12 cm (4.7 in) long tail. The majority of their body is a dark, olive-green and brown color with a reddish-brown head coloration. The underside of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central American Dwarf Squirrel
The Central American dwarf squirrel, also known as Alfaro's pygmy squirrel,(''Microsciurus alfari'') is a small tree squirrel in the genus ''Microsciurus'' and Tribe (biology), tribe Sciurini found in Colombia, Costa Rica, Nicaragua, and Panama. No species of squirrel within this genus are endangered, but they are rarely seen because they are shy and live hidden lives. This suggests that their population numbers may be larger than documented.Allen, J. (1895). Descriptions of New American Mammals. ''Bulletin - American Museum of Natural History'', ''7'', 333. https://www.biodiversitylibrary.org/page/26894480#page/363/mode/1up Description Central American dwarf squirrels are not as small as their name suggests. In fact, their body measurements are close to that of the Red Squirrel and Gray Squirrel, with a head-and-body length about 15 cm (5.9 in) with a 12 cm (4.7 in) long tail. The majority of their body is a dark, olive-green and brown color with a reddish-brown head coloration. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsciurus Santanderensis
The Santander dwarf squirrel (''Microsciurus santanderensis'') is a small tree squirrel endemic to Colombia. Description The Santander dwarf squirrel is a small tree squirrel, measuring around from nose to rump, with a tail about the same length again. Females are, on average, slightly larger than males. Originally described as a subspecies of the Andean squirrel, it is similar to that species in appearance, but somewhat smaller. It has reddish-orange fur over most of the body, with a black line running down the centre of the back and paler, pinkish-buff underparts. There are also paler markings on the snout and around the eyes. The tail is long and thin; the fur on the tail is relatively short, rather than bushy, and is tipped with white but otherwise black above and paler below. Distribution and biology The precise range of the Santander dwarf squirrel is unclear, since it is often confused with the Andean squirrel. It was originally described from Santander Department in Colo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santander Dwarf Squirrel
The Santander dwarf squirrel (''Microsciurus santanderensis'') is a small tree squirrel endemic to Colombia. Description The Santander dwarf squirrel is a small tree squirrel, measuring around from nose to rump, with a tail about the same length again. Females are, on average, slightly larger than males. Originally described as a subspecies of the Andean squirrel, it is similar to that species in appearance, but somewhat smaller. It has reddish-orange fur over most of the body, with a black line running down the centre of the back and paler, pinkish-buff underparts. There are also paler markings on the snout and around the eyes. The tail is long and thin; the fur on the tail is relatively short, rather than bushy, and is tipped with white but otherwise black above and paler below. Distribution and biology The precise range of the Santander dwarf squirrel is unclear, since it is often confused with the Andean squirrel. It was originally described from Santander Department in Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of South America
This is a list of the native wild mammal species recorded in South America. South America's terrestrial mammals fall into three distinct groups: "old-timers", African immigrants and recent North American immigrants. The marsupials and xenarthrans are "old-timers", their ancestors having been present on the continent since at least the very early Cenozoic Era. During the early Cenozoic, South America's only land connection was to Antarctica, so it was effectively cut off from most of the world; as the fragments of Gondwana continued to separate, this connection was lost, leaving South America an island continent. Caviomorph rodents and monkeys arrived as "waif dispersers" by rafting across the Atlantic from Africa in the Eocene epoch, 35 million or more years ago. All the remaining nonflying mammals of South America are recent arrivals, having migrated from North America via Central America during the past seven million years as part of the Great American Interchange; this invasion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sciurinae
Sciurinae is a subfamily of squirrels (in the family Sciuridae), uniting the flying squirrels with certain related tree squirrels. Older sources place the flying squirrels in a separate subfamily (Pteromyinae) and unite all remaining sciurids into the subfamily Sciurinae, but this has been strongly refuted by genetic studies. Classification Subfamily SciurinaeThorington, R. W. and R. S. Hoffmann. 2005. Family Sciuridae. pp 754–818 in Mammal Species of the World A Taxonomic and Geographic Reference. Johns Hopkins University Press, Baltimore. walker's mammals of the world 5th edition Volume 1 *Tribe Sciurini **Genus ''Microsciurus'' – American dwarf squirrels ***Central American dwarf squirrel, ''M. alfari'' ***Amazon dwarf squirrel, ''M. flaviventer'' ***Western dwarf squirrel, ''M. mimulus'' ***Santander dwarf squirrel, ''M. santanderensis'' **Genus '' Rheithrosciurus'' *** Tufted ground squirrel, ''R. macrotis'' **Genus ''Sciurus'' ***Subgenus ''Sciurus'' ****Allen's squirrel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sciurus
The genus ''Sciurus'' contains most of the common, bushy-tailed squirrels in North America, Europe, temperate Asia, Central America and South America. Species The number of species in the genus is subject to change. In 2005, Thorington & Hoffman- whose taxonomic interpretation is followed by the IUCN website- accepted 28 species in the genus: Genus ''Sciurus'' *Subgenus ''Sciurus'' **Allen's squirrel, ''Sciurus alleni'' **Arizona gray squirrel, ''Sciurus arizonensis'' **Mexican gray squirrel, ''Sciurus aureogaster'' **Eastern gray squirrel, ''Sciurus carolinensis'' **Collie's squirrel, ''Sciurus colliaei'' **Deppe's squirrel, ''Sciurus deppei'' **Japanese squirrel, ''Sciurus lis'' **Calabrian black squirrel, ''Sciurus meridionalis'' **Mexican fox squirrel, ''Sciurus nayaritensis'' **Fox squirrel, ''Sciurus niger'' ** Peters's squirrel, ''Sciurus oculatus'' **Variegated squirrel, ''Sciurus variegatoides'' **Eurasian red squirrel, ''Sciurus vulgaris'' **Yucatan squirrel, ''Sciur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andean Squirrel
The Andean squirrel (''Sciurus pucheranii'') is a tree squirrel endemic to Colombia where it inhabits montane rain forest and cloud forests of the Cordillera Occidental and Cordillera Central ranges of the Colombian Andes, at elevations between . It is a small species with a body length of about and a similar length tail. It has soft, silky, reddish-brown fur, a darker tail and yellowish-grey underparts. It is thought to be diurnal but has been little studied, and the International Union for Conservation of Nature has rated its conservation status as being data deficient. Description The Andean squirrel is a typical tree squirrel, in its general proportions resembling the Eastern grey squirrel of North America. However, it is much smaller, with a body length of only about , and a tail. Although there are few records of its weight, it appears to be generally between about . It has soft, silky, reddish-brown fur over most of the body, merging to greyish-yellow on the underpar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oldfield Thomas
Michael Rogers Oldfield Thomas (21 February 1858 – 16 June 1929) was a British zoologist. Career Thomas worked at the Natural History Museum on mammals, describing about 2,000 new species and subspecies for the first time. He was appointed to the museum secretary's office in 1876, transferring to the zoological department in 1878. In 1891, Thomas married Mary Kane, daughter of Sir Andrew Clark, heiress to a small fortune, which gave him the finances to hire mammal collectors and present their specimens to the museum. He also did field work himself in Western Europe and South America. His wife shared his interest in natural history, and accompanied him on collecting trips. In 1896, when William Henry Flower took control of the department, he hired Richard Lydekker Richard Lydekker (; 25 July 1849 – 16 April 1915) was an English naturalist, geologist and writer of numerous books on natural history. Biography Richard Lydekker was born at Tavistock Square in London. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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