Uintatherium

Common card · No. 324001

Uintatherium is an extinct genus of dinoceratan mammal that lived during the Eocene epoch. Two species are currently recognized: U. anceps is found in the United States and lived during the early to middle Eocene (50.5–37 million years ago), while U. insperatus is found in China and lived during the middle and late Eocene (48–37 million years ago). The first fossils of Uintatherium were recovered from the Fort Bridger Basin and were initially believed to belong to a new species of brontothere. Several previously recognized species, as well as genera such as Edward Drinker Cope's Loxolophodon and Othniel Charles Marsh's Tinoceras, are now assigned to Uintatherium anceps. The systematic position of Uintatherium and other dinoceratans has long been debated. Originally, they were assigned to the order Amblypoda, which united various early ungulates from the Paleogene. Amblypoda has since fallen out of use. The most widespread hypothesis is that dinoceratans are related to the South American...

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