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Uintatherium Anceps
''Uintatherium'' ("Beast of the Uinta Mountains") is an extinct genus of herbivorous dinoceratan mammal that lived during the Eocene epoch. Two species are currently recognized: ''U. anceps'' from the United States during the Early to Middle Eocene (50.5-39.7 million years ago) and ''U. insperatus'' of Middle to Late Eocene (48–37 million years ago) China. The first fossils of ''Uintatherium'' were recovered in the Fort Bridger Basin, and were initially believed to belong to a new species of brontothere. Despite other generic names being assigned, such as Edward Drinker Cope's ''Loxolophodon'' and Othniel Charles Marsh's ''Tinoceras'', and an assortment of attempts at naming new species, ''Uintatherium anceps'' has since come to encompass all of these. The phylogeny of ''Uintatherium'' and other dinoceratans has long been debated. Originally, they were assigned to the now-invalid order Amblypoda, which united various basal ungulates from the Palaeogene. Ambylpoda has since ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''Ēṓs'', 'Eos, Dawn') and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.See: *Letter from William Whewell to Charles Lyell dated 31 January 1831 in: * From p. 55: "The period next antecedent we shall call Eocene, from ήως, aurora, and χαινος, recens, because the extremely small proportion of living species contained in these strata, indicates what may be considered the first commencement, or ''dawn'', of the existing state of the animate creation." The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isoto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenungulata
Xenungulata ("strange ungulates") is an order of extinct and primitive South American hoofed mammals that lived from the Late Paleocene to Early Eocene ( Itaboraian to Casamayoran in the SALMA classification). Fossils of the order are known from deposits in Brazil, Argentina, Peru, and Colombia. The best known member of this enigmatic order is the genus '' Carodnia'', a tapir-like and -sized animal with a gait similar to living African elephant African elephants are members of the genus ''Loxodonta'' comprising two living elephant species, the African bush elephant (''L. africana'') and the smaller African forest elephant (''L. cyclotis''). Both are social herbivores with grey skin. ...s. Description Xenungulates are characterized by bilophodonty, bilophodont M1–2 and M1–2, similar to Pyrotheria, pyrotheres, and complex lophate third molars, similar to Uintatheriidae, uintatheres. Though other relationships, to arctocyonidae, arctocyonids for example, have been su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
