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Thylamys Minutus
''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 Fossilworks
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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] |
Thylamys Velutinus
The dwarf fat-tailed mouse opossum (''Thylamys velutinus''), also known as the velvety fat-tailed opossum, is an opossum species from South America. It is endemic to Brazil, where it is found in cerrado and caatinga habitats. Its head-and-body length ranges from , with an average of , and its tail length ranges from with an average . Its diet is 44% arthropods; 75% of its diet consists of animals and animal products. Its ventral Standard anatomical terms of location are used to describe unambiguously the anatomy of humans and other animals. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position prov ... fur is entirely gray-based. Its hind foot is less than , which is short for the genus. References Opossums Marsupials of Brazil Endemic mammals of Brazil Mammals described in 1842 Taxa named by Johann Andreas Wagner {{marsupial-stub ... [...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 126 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 in the late Cenozoic. The Virginia opossum is the only species found in the United States and Canada. It is often simply referred to as an opossum; in North America, it is commonly referred to as a possum (; sometimes rendered as ''possum'' in written form to indicate the dropped "o"). The Australasian arboreal marsupials of suborder Phalangeriformes are also called possums because of their resemblance to opossums, but they belong to a different order. The opossum is typically a nonaggressive animal and almost never carries the virus that causes rabies. Etymology The word ''opossum'' is derived from the Powhatan language and was first recorded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thylamys Fenestrae
''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 Fossilworks
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Fossilworks
Fossilworks was a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database, a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was created in 1998 by John Alroy and housed at Macquarie University Macquarie University ( ) is a Public university, public research university in Sydney, New South Wales, Australia. Founded in 1964 by the New South Wales Government, it was the third university to be established in the Sydney metropolitan area. .... It included many analysis and data visualization tools formerly included in the Paleobiology Database.{{cite web, title=Frequently asked questions, url=http://www.fossilworks.org/cgi-bin/bridge.pl?page=FAQ, publisher=Fossilworks, access-date=17 December 2021, archive-date=18 May 2022, archive-url=https://web.archive.org/web/20220518205516/http://www.fossilworks.org/cgi-bin/bridge.pl?page=FAQ, url-status=dead Fossilworks was sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thylamys Sponsorius
The Argentine fat-tailed mouse opossum (''Thylamys sponsorius'') was formerly considered a species of opossum in the family Didelphidae. It is found in the eastern foothills of the Andes in northern Argentina and southern Bolivia. Typically reach around 10-13 cm (4-5 inches) in body length, with a bushy tail adding another 12-15 cm (5-6 inches). Its dorsal fur is gray brown to dark brown. Its ventral fur is gray-based except for the white to yellowish chest hairs. It has been distinguished from ''T. cinderella'' by its postorbital ridges. ''T. cinderella'' has well-developed postorbital ridges in both juveniles and adults that extend laterally behind the eye sockets. Only adults of ''T. sponsorius'' have fully developed postorbital ridges, and these do not extend laterally behind the eye sockets. While the American Society of Mammalogists maintains this as a distinct species, mitochondrial DNA Mitochondrial DNA (mtDNA and mDNA) is the DNA located in the mitochondrion, mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thylamys Cinderella
The Cinderella fat-tailed mouse opossum (''Thylamys cinderella'') is a species of opossum in the family Didelphidae. It is found in northern Argentina and southern Bolivia, in the eastern foothills of the Andes. Its dorsal fur is gray brown to dark brown. Its ventral fur is gray-based, except for the white to yellowish chest hairs. It has been distinguished from ''T. sponsorius'' by the well-developed postorbital ridges of the latter, but mitochondrial DNA Mitochondrial DNA (mtDNA and mDNA) is the DNA located in the mitochondrion, mitochondria organelles in a eukaryotic cell that converts chemical energy from food into adenosine triphosphate (ATP). Mitochondrial DNA is a small portion of the D ... sequence analysis does not support separate species status for ''sponsorius''. References Opossums Fauna of the Andes Marsupials of Argentina Marsupials of Bolivia Mammals described in 1902 Taxa named by Oldfield Thomas {{marsupial-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thylamys Venustus
The buff-bellied fat-tailed mouse opossum (''Thylamys venustus'') is a species of opossum in the family Didelphidae. It is found in the transitional and humid forests of northern Argentina and southern Bolivia. Its dorsal fur is cinnamon brown. Most of its ventral fur is gray-based, but its chest, throat, and the thoracic midline (the midline of the thorax, which ranges from the throat to the top of the abdomen) are not gray-based. The postorbital ridges are absent in the young and weakly developed in adults. Initially classed as a Marmosa elegans subspecies, it was subsequently raised to species status in 1933. There are four synonyms: ''Marmosa elegans venusta'' (Thomas, 1902, Cochabamba), ''Marmosa elegans cinderella'' (Thomas, 1902, Tucumán Province), ''Marmosa elegans sponsoria'' (Thomas, 1921, Jujuy Province) and ''Marmosa janetta'' (Thomas, 1926, Tarija Department) with ''cinderella'' and ''sponsoria'' actually being one taxon and a subspecies of ''venustus''; ''janet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thylamys Macrurus
The Paraguayan fat-tailed mouse opossum (''Thylamys macrurus'') is a species of opossum in the family Didelphidae. It is found in forested areas of Brazil and Paraguay. Description It is known only from a few specimens. For two listed specimens, one had a head-and-body length of about 135 mm and a tail length of about 140 mm, while the other had a head-and-body length of about 120 mm and a tail length of about 155 mm. Most of its fur is gray, but the shoulder areas are reddish gray, and the ventral fur is pure white or creamy white. There is also a ring of black fur surrounding each eye. The ventral surface of the tail is white. The dorsal surface of the tail is gray for the first one third to one half of its length (going from the base to the tip); the remainder of the dorsal Dorsal (from Latin ''dorsum'' ‘back’) may refer to: * Dorsal (anatomy), an anatomical term of location referring to the back or upper side of an organism or parts of an organism ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thylamys Pusillus
The common fat-tailed mouse opossum (''Thylamys pusillus'') is a species of opossum in the family Didelphidae. It occurs in Argentina, Bolivia, and Paraguay in chaco and Andean foothill habitats. Its head-and-body length is about 75 to 120 (mean 94.3) mm, and its tail length is about 90 to 134 (mean 103.6) mm. Its dorsal fur is brownish gray, and its ventral fur is yellowish to white. The legs and cheeks are the same color as the ventral surface. Its tail is sharply bicolored (divided into two colors). A ring of faintly darker fur surrounds each eye An eye is a sensory organ that allows an organism to perceive visual information. It detects light and converts it into electro-chemical impulses in neurons (neurones). It is part of an organism's visual system. In higher organisms, the ey .... Its tail often lacks fat deposits, but does not always. References Opossums Fauna of the Andes Marsupials of Argentina Marsupials of Bolivia Mammals of Uruguay Mammals des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thylamys Pulchellus
''Thylamys pulchellus'', known as the Dry Chaco fat-tailed opossum, is a species of opossum in the subfamily Didelphinae. The species is endemic to the Argentine portion of Gran Chaco The Gran Chaco or simply Chaco is a sparsely populated, hot and semiarid lowland tropical dry broadleaf forest natural region of the Río de la Plata basin, divided among eastern Bolivia, western Paraguay, northern Argentina, and a portion o .... The species was also once considered to be a part of the common fat-tailed mouse opossum (''Thylamys pusillus'') but is now considered a different species based on morphological and genetic differences. References Opossums Marsupials of Argentina Endemic fauna of Argentina Mammals described in 1934 {{marsupial-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thylamys Citellus
''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 Fossilworks
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