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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 Mesohippus ： ウィキペディア英語版 Mesohippus ''Mesohippus'' (Greek: ''μεσο''/''meso'' meaning "middle" and ''ιππος''/''hippos'' meaning "horse") is an extinct genus of early horse. It lived some 30 to 40 million years ago from the Middle Eocene to the Early Oligocene. Like many fossil horses, ''Mesohippus'' was common in North America. ==Description== ''Mesohippus'' had longer legs than its predecessor ''Eohippus'' and stood about 60 cm tall. It had also lost a toe and stood predominantly on its middle toe, although the other two were also used. The face of ''Mesohippus'' was longer and larger than earlier equids. It had a slight facial fossa, or depression, in the skull. The eyes were rounder, and were set wider apart and farther back than in ''Hyracotherium''. Unlike earlier horses, its teeth were low crowned and contained a single gap behind the front teeth, where the bit now rests in the modern horse. In addition, it had another grinding tooth, making a total of six. ''Mesohippus'' was a browser that fed on tender twigs and fruit.〔 The cerebral hemisphere, or cranial cavity, was notably larger than that of its predecessors; its brain was similar to that of modern horses. 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「Mesohippus」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.