翻訳と辞書 Words near each other ・ Sphecosoma trinitatis ・ Sphecosoma vicinum ・ Sphedamnocarpus ・ Sphedanolestes ・ Sphedanolestes cingulatus ・ Spheeris ・ Sphegina ・ Sphegina elegans ・ Sphegina montana ・ Sphegina sibirica ・ Spheginobaccha ・ Spheginobacchini ・ Spheksophobia ・ Sphenacanthus ・ Sphenacodon ・ Sphenacodontia ・ Sphenacodontidae ・ Sphenacodontoidea ・ Sphenanthias ・ Sphenarches ・ Sphenarches anisodactylus ・ Sphenarches bifurcatus ・ Sphenarches bilineatus ・ Sphenarches caffer ・ Sphenarches cafferoides ・ Sphenarches nanellus ・ Sphenarches ontario ・ Sphenarches zanclistes ・ Sphenarium ・ Sphenarium purpurascens Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Sphenacodontia ： ウィキペディア英語版 Sphenacodontia Sphenacodontia is a stem-based clade of derived synapsids. It was defined by Amson and Laurin (2011) as "the largest clade that includes ''Haptodus baylei'', ''Haptodus garnettensis'' and ''Sphenacodon ferox'', but not ''Edaphosaurus pogonias''".〔 They first appear during the Late Pennsylvanian epoch. Basal Sphenacodontia constitute a transitional evolutionary series from early pelycosaurs to ancestral therapsids (which in turn were the ancestors of more advanced forms and finally the mammals). One might say that the Sphenacodontians are proto-therapsids. ==Characteristics== The defining characteristics include a thickening of the maxilla visible on its internal surface, above the large front (caniniform) teeth; and the premaxillary teeth being set in deep sockets. All other (sister group and more primitive) synapsid clades have teeth that are set in shallow sockets. 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「Sphenacodontia」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.