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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 Desmatodon ： ウィキペディア英語版 Desmatodon ''Desmatodon'' is an extinct genus of diadectid reptiliomorph. With fossils found from the Kasimovian (Missourian) stage of the Late Carboniferous of Pennsylvania, Colorado, and New Mexico in the United States, ''Desmatodon'' is the oldest known diadectid. Two species are currently recognized: the type species ''D. hollandi'' and the species ''D. hesperis''. ==Description== Remains of ''Desmatodon'' have been found from the Red Knob Formation of Pennsylvania, the Sangre de Cristo Formation in Colorado, and the Cutler Formation of New Mexico. The genus is known mostly from teeth and portions of skulls. The cheek teeth are robust and spade-shaped with several cusps on their surfaces. The two species can be distinguished by the distribution of teeth in their jaws; ''D. hesperis'' has tightly packed teeth while ''D. hollandi'' has widely spaced teeth. In both species, the lower jaw is deep and possesses a ridge that may have aided in chewing plant material. Some specimens that are thought to belong to young individuals have fewer, more widely spaced teeth with no wear facets. 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「Desmatodon」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.