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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 Dinocephalia ： ウィキペディア英語版 Dinocephalia Dinocephalia is a clade of large-bodied early therapsids that flourished for a brief time in the Middle Permian between 272 and 260 million years ago (Ma), but became extinct leaving no descendants. Dinocephalians included both herbivorous and carnivorous forms, and many species had thickened skulls with many knobs and bony projections. Dinocephalian fossils are known from Russia, China, Brazil, South Africa, and Zimbabwe. ==Description== Apart from the Biarmosuchians and the Eotitanosuchidae, the Dinocephalians are the least advanced therapsids, although still uniquely specialised in their own way. They retain a number of primitive characteristics (e.g. no secondary palate, small dentary) shared with their pelycosaur ancestors, although they are also more advanced in possessing therapsid adaptations like the expansion of the ilium and more erect limbs. They include carnivorous, herbivorous, and omnivorous forms. Some were semi-aquatic, others were fully terrestrial. They were among the largest animals of the Permian period; only the biggest Caseidae and Pareiasauridea rivalling or even exceeding them in size. 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「Dinocephalia」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.