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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Metamynodon ： ウィキペディア英語版 Metamynodon ''Metamynodon'' is an extinct genus of amynodont perissodactyls whose known species lived in North America (White River Fauna) during the early Oligocene, although the questionable inclusion of ''M. mckinneyi'' could extend their range back in time, to the Middle Eocene.They were large, displaying a suit of semiaquatic adaptations similar to those of modern hippos despite their closer affinities with rhinoceroses. ==Characteristics== ''Metamynodon planifrons'', the largest species, was about in body length with a weight up to 1.99 tons, and, although it was distantly related to the modern rhinoceros, looked more like a hippopotamus.〔http://museumu03.museumwww.naturkundemuseum-berlin.de/cgi-bin/bridge.pl?a=basicTaxonInfo&taxon_no=48447〕 Its front legs had four toes instead of the three found in modern rhinos. Although it was a herbivore (as indicated by its teeth), its skull had a bony ridge typically associated with carnivorous mammals. It probably fed on tough plant material, and the jaw muscles were attached to this ridge. ''Metamynodon'' would have used its enlarged canines to search for food in river banks, and may also have had highly flexible lips. Its eyes were placed high on the skull, meaning that it would have been able to see while almost fully submerged, much like a hippopotamus or crocodile. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Metamynodon」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.