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Chacoan Pygmy Opossum
The Chacoan pygmy opossum (''Chacodelphys formosa'') is a recently described genus and species of didelphimorph marsupial. The only species in ''Chacodelphys'', ''C. formosa'', was known until 2004 from only one specimen collected in 1920 in the Chaco of Formosa Province, Argentina. The species is gaining popularity as a pocket pet. Description The Chacoan pygmy opossum is the smallest known species of didelphid. It has a head-body length of 68 mm, a tail of 55 mm and a hind foot of 11. It differs from the other " marmosine" genera (''Marmosa'', ''Monodelphis'', ''Thylamys'', '' Tlacuatzin'', ''Gracilinanus'', ''Marmosops'', '' Lestodelphys'') in having a long third manual digit, no distinctly tricolored pelage Fur is a thick growth of hair that covers the skin of mammals. It consists of a combination of oily #Guard hair, guard hair on top and thick #Down hair, underfur beneath. The guard hair keeps moisture from reaching the skin; the underfur acts as ..., a long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Didelphimorph
Opossums () are members of the marsupial order Didelphimorphia () endemic to the Americas. The largest order of marsupials in the Western Hemisphere, it comprises 93 species in 18 genera. Opossums originated in South America and entered North America in the Great American Interchange following the connection of North and South America. The Virginia opossum is the only species found in the United States and Canada. It is often simply referred to as an opossum, and in North America it is commonly referred to as a possum (; sometimes rendered as ''possum'' in written form to indicate the dropped "o"). Possums should not be confused with the Australasian arboreal marsupials of suborder Phalangeriformes that are also called possums because of their resemblance to the Didelphimorphia. The opossum is typically a nonaggressive animal. Etymology The word ''opossum'' is borrowed from the Powhatan language and was first recorded between 1607 and 1611 by John Smith (as ''opassom'') an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tlacuatzin
The grayish mouse opossum (''Tlacuatzin canescens'') is a species of opossum endemic to Mexico. It is the sole species in the genus ''Tlacuatzin''. Description The grayish mouse opossum is an unusually small opossum, measuring in total length, including an 11- to 16-cm (4.3- to 6.3-in) tail. Adults weigh from . The body is covered in short, soft fur, with a slightly woolly texture. As the common name suggests, the fur is pale to brownish grey in colour, fading to white or near-white on the under parts and legs. In addition, clearly visible rings of black hair occur around the eyes, and, on females, patches of orange fur in the groin region, sometimes extending to the thighs and up the midline almost to the throat. The whiskers are relatively short, and the ears are rounded, hairless, and dark in colour. The tail is long and prehensile, and hairless for almost all of its length, apart from the base. Females have nine teats, but, unlike many other marsupials, do not have a pouch. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marsupials Of South America
Marsupials are any members of the mammalian infraclass Marsupialia. All extant marsupials are endemic to Australasia, Wallacea and the Americas. A distinctive characteristic common to most of these species is that the young are carried in a pouch. Marsupials include opossums, Tasmanian devils, kangaroos, koalas, wombats, wallabies, bandicoots, and the extinct thylacine. Marsupials represent the clade originating from the last common ancestor of extant metatherians, the group containing all mammals more closely related to marsupials than to placentals. They give birth to relatively undeveloped young that often reside in a pouch located on their mothers' abdomen for a certain amount of time. Close to 70% of the 334 extant species occur on the Australian continent (the mainland, Tasmania, New Guinea and nearby islands). The remaining 30% are found in the Americas—primarily in South America, thirteen in Central America, and one species, the Virginia opossum, in North America, nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opossums
Opossums () are members of the marsupial order Didelphimorphia () endemic to the Americas. The largest order of marsupials in the Western Hemisphere, it comprises 93 species in 18 genera. Opossums originated in South America and entered North America in the Great American Interchange following the connection of North and South America. The Virginia opossum is the only species found in the United States and Canada. It is often simply referred to as an opossum, and in North America it is commonly referred to as a possum (; sometimes rendered as ''possum'' in written form to indicate the dropped "o"). Possums should not be confused with the Australasian arboreal marsupials of suborder Phalangeriformes that are also called possums because of their resemblance to the Didelphimorphia. The opossum is typically a nonaggressive animal. Etymology The word ''opossum'' is borrowed from the Powhatan language and was first recorded between 1607 and 1611 by John Smith (as ''opassom'') an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Henry Hamilton Tate
George Henry Hamilton Tate (April 30, 1894 – December 24, 1953) was a British-born American zoologist and botanist, who worked as a mammalogist for the American Museum of Natural History in New York City. In his lifetime he wrote several books on subjects such as the South American mouse opossums and the mammals of the Pacific and East Asia. Biography He was born in London on April 30, 1894. He had a brother, Geoffrey Tate. In 1912 he migrated from Britain to New York City with his family. From 1912 to 1914 he worked as telegraph operator on Long Island. He then joined the British Army to fight in World War I. At the end of the war, he studied at the Imperial College of Science and Technology in London, England without taking a degree. He then migrated back to the United States and became a field assistant in mammalogy at the American Museum of Natural History. In 1927 he completed his B.S. at Columbia University in Manhattan, and became a United States citizen. In Septemb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelage
Fur is a thick growth of hair that covers the skin of mammals. It consists of a combination of oily #Guard hair, guard hair on top and thick #Down hair, underfur beneath. The guard hair keeps moisture from reaching the skin; the underfur acts as an thermal insulation, insulating blanket that keeps the animal warm. The fur of mammals has many uses: protection, sensory purposes, waterproofing, and camouflaging, with the primary usage being thermoregulation. The types of hair include * ''definitive'', which may be moulting, shed after reaching a certain length; * ''vibrissae'', which are sensory hairs and are most commonly whiskers; * ''pelage'', which consists of guard hairs, under-fur, and awn hair; * ''spine (zoology), spines'', which are a type of stiff guard hair used for defense in, for example, porcupines; * ''bristles'', which are long hairs usually used in visual signals, such as the mane (lion), mane of a lion; * ''velli'', often called "down fur", which insulates new ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lestodelphys
The Patagonian opossum ''(Lestodelphys halli)'' is the sole species in genus ''Lestodelphys''. Distribution The Patagonian opossum occurs further south, in Argentina, than any other living marsupial. Although distributed throughout some parts of southern Argentina, it is one of the least known mammals of South America. They have been spotted near Monte Phytogeographic Province, and in Patagonia Phytogeographic Province, yet there are no records of Patagonian opossums in central Patagonia, which leads mammalogists to believe that they can only live in the Patagonian steppe. There are two areas in the Patagonian steppe where these animals are often found: the province of La Pampa and Choele Choel (northern Rio Negro Province). Form It is suggested that the Patagonian opossum may have emerged from the same ancestral group as ''Marmosa''. They resemble each other closely. In the winter both types have similarly thickening at the base of the tails, where fat accumulates. Yet they do n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marmosops
''Marmosops'' is a genus of Neotropical opossums of the family Didelphidae. The genus was originally treated as a subgenus from the genus ''Marmosa'' rather than having their own classification. This was changed in 1989 by Gardner and Crieghton, who officially separated the group and made them their own genus. The mix-up between to genera ''Marmosa'' and ''Marmosops'' was common due to the similar appearances including size and other external features. However, the two groups differ significantly in their integument and in the arrangement of their skull and dentition. Voss, R.S., Tarifa, T., and E. Yensen. 2004. An Introduction to Marmosops (Marsupialia: Didelphidae), with the Description of a New Species from Bolivia and Notes on the Taxonomy and Distribution of Other Bolivian Forms. American Museum of Natural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gracilinanus
''Gracilinanus'' is a genus of opossum in the family Didelphidae. It was separated from the genus ''Marmosa'' in 1989, and has since had the genera ''Cryptonanus'', ''Chacodelphys'', and ''Hyladelphys'' removed from it. Physical description Gracile mouse opossums, excluding the fat-tailed mouse opossum, in general, have a prehensile tail that is thin and very long. The tails of mouse opossums are naked."Mouse opossum". Encyclopædia Britannica. Encyclopædia Britannica Online Academic Edition. Encyclopædia Britannica Inc., 2012. Web 3 November 2012. Mouse opossums have ears that are, both, large and naked. General opossums, including ''Gracilinanus'' species, have noses that are pointed. Another general characteristic that mouse opossum have are mammary glands. Each member of the ''Gracilinanus'' species has a dark ring that is found around each eye."Mammals." EDGE of Existence. Web. 28 November 2012. . The species ''G. microtarsus'' has red-brown fur on the top of the body ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thylamys
''Thylamys'' is a genus of opossums in the family Didelphidae. The premaxillae are rounded rather than pointed. The females lack a pouch. The females' nipples are arranged in two symmetrical rows on the abdomen. All species but ''T. macrurus'' store fat in their tails., although this is not necessarily true for all species in the genus. Fossils belonging to the genus date back to the Miocene, with the oldest specimens being found in the Cerro Azul Formation of Argentina and the Honda Group of Colombia. Genetic studies indicate that the genus may have originated around 14 million years ago. Taxonomy Cladogram of living ''Thylamys'' species. Other species of ''Thylamys''.''Thylamys'' at |
Marsupial
Marsupials are any members of the mammalian infraclass Marsupialia. All extant marsupials are endemic to Australasia, Wallacea and the Americas. A distinctive characteristic common to most of these species is that the young are carried in a pouch. Marsupials include opossums, Tasmanian devils, kangaroos, koalas, wombats, wallabies, bandicoots, and the extinct thylacine. Marsupials represent the clade originating from the last common ancestor of extant metatherians, the group containing all mammals more closely related to marsupials than to placentals. They give birth to relatively undeveloped young that often reside in a pouch located on their mothers' abdomen for a certain amount of time. Close to 70% of the 334 extant species occur on the Australian continent (the mainland, Tasmania, New Guinea and nearby islands). The remaining 30% are found in the Americas—primarily in South America, thirteen in Central America, and one species, the Virginia opossum, in North America, n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monodelphis
''Monodelphis'' is a genus of marsupials in the family Didelphidae, commonly referred to as short-tailed opossums. They are found throughout South America. , the most recently described species is ''M. vossi''. Species * Sepia short-tailed opossum (''Monodelphis adusta'') * Northern three-striped opossum (''Monodelphis americana'') * Arlindo's short-tailed opossum (''Monodelphis arlindoi'') * Northern red-sided opossum (''Monodelphis brevicaudata'') * Yellow-sided opossum (''Monodelphis dimidiata'') * Gray short-tailed opossum (''Monodelphis domestica'') * Emilia's short-tailed opossum (''Monodelphis emiliae'') * Gardner's short-tailed opossum (''Monodelphis gardneri'') * Amazonian red-sided opossum (''Monodelphis glirina'') * Ihering's three-striped opossum (''Monodelphis iheringi'') * Pygmy short-tailed opossum (''Monodelphis kunsi'') * Marajó short-tailed opossum (''Monodelphis maraxina'') * Osgood's short-tailed opossum (''Monodelphis osgoodi'') * Hooded red-sided ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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