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Subhyracodon : ウィキペディア英語版 | Subhyracodon
''Subhyracodon'' is an extinct genus of cow-sized rhinoceroses. With a length of 2.4 m (8 ft) and a weight estimated of 381.3 kg (in ''S. mitis''), it was a tapir-sized herbivore on the plains of early Oligocene South Dakota 33 million years ago (White River Fauna), smaller than only the ''Brontops'' and the chalicotheres.〔http://museumu03.museumwww.naturkundemuseum-berlin.de/cgi-bin/bridge.pl?a=basicTaxonInfo&taxon_no=51872〕 ''Subhyracodon'' had no horns, relying more on its speed to escape, but a species found at Wind Cave National Park had a pair of bony nasal ridges. The genera ''Caenopus'' and ''Aceratherium'' were both synonymized with ''Subhyracodon'' ==See also==
*Badlands National Park
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