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Uintatherium
''Uintatherium'' ("Beast of the Uinta Mountains") is an extinct genus of herbivorous mammal that lived during the Eocene epoch; two species are currently recognized, ''U. anceps'' from the United States during the Early to Middle Eocene, and ''U. insperatus'' of Middle to Late Eocene China. ''Uintatherium'' went extinct about 37 million years ago, presumably due to climate change and competition with perissodactyls, such as brontotheres and rhinos.
==Description==
''Uintatherium'' was a large browsing animal. With a length of about 4 m (13 ft), a height of 1.70 m (5.6 ft), and a weight up to 2 tonnes, it was similar to today's rhinoceros, both in size and in shape, although they are not closely related.〔http://www.enchantedlearning.com/subjects/mammals/Iceagemammals.shtml〕 Its legs were robust to sustain the weight of the animal and were equipped with claws. Moreover, a Uintathere's sternum was made up of horizontal segments, unlike today's rhinos, which have compressed vertical segments.〔(Restoration of ''Dinoceras mirabile'', de Charles Othniel Marsh )〕
As with other mammals of the Eocene epoch, ''Uintatherium'' didn't exactly excel in the intelligence department it had an unusually small brain compared to the rest of its bulky body.〔(【引用サイトリンク】url=http://dinosaurs.about.com/od/mesozoicmammals/p/uintatherium.htm )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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