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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 Odd-toed ungulate ： ウィキペディア英語版 Odd-toed ungulate Perissodactyls, otherwise known as odd-toed ungulates, compose an order of mammals characterized by an odd number of toes and being hindgut fermenters with somewhat simple stomachs. As large grazers they digest plant cellulose in their intestines rather than in one or more stomach chambers, unlike the even-toed ungulates. The order includes three extant families: Equidae, including horses, donkeys, and zebras, Rhinocerotidae, rhinos and Tapiridae, tapirs, with a total of about 17 species. In spite of their very different appearance they were recognized by the zoologist Richard Owen, who also coined the term, as related families, in the 19th century. ==Anatomy== As an adaptation to different habitats and lifestyles, the odd-toed ungulates have developed distinct differences in their build. Common features are in the construction of the limbs and teeth. Rhinos are the largest members to be classified into this group. The extinct ''Paraceratherium'', a hornless rhino from the Oligocene, is even considered the largest land mammal of all time. An original, now extinct, member of the order is the prehistoric horse ''Hyracotherium'' who were quite small with only shoulder height. Apart from dwarf varieties of the domestic horse and the donkey, perissodactyls reach a body length and a weight of . While rhinos are only sparsely hairy and exhibit a thick epidermis, tapirs and horses are provided with a dense, short coat. Most species are gray or brown, zebras however carry a typical stripe dress, and young tapirs have white longitudinal stripes. 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「Odd-toed ungulate」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.