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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 Coelognathosuchia ： ウィキペディア英語版 Coelognathosuchia Coelognathosuchia is an extinct clade of neosuchian crocodyliforms that includes Goniopholididae and Pholidosauridae, two families of superficially crocodile-like aquatic crocodyliforms from the Mesozoic. Martin ''et al.'' (in press) named the clade after finding goniopholidids and pholidosaurids to group together in their phylogenetic analysis of crocodyliform evolutionary relationships. In their analysis, Pholidosauridae was monophyletic and Goniopholididae was paraphyletic, being an assemblage of successively more basal taxa within Coelognathosuchia. Coelognathosuchia itself was positioned near the base of the larger clade Neosuchia as the sister group to a clade containing the Early Cretaceous neosuchian ''Bernissartia'' and Eosuchia, the group that includes all modern crocodilians and their closest extinct relatives. Martin ''et al.'' named Coelognathosuchia from the Greek (koílos, "concave"), (gnáthos, "jaw") and (suchos, "crocodile"), after a small depression on the surface of the skull between the maxilla and jugal bones in both goniopholidids and pholidosaurs. Other diagonostic features of Coelognathosuchia include orbits (eye sockets) that are narrower than the frontal bone that separates them and smaller than the supratemporal fenestrae (two holes at the back of the skull roof) behind them, a notch between the premaxilla and maxilla at the tip of the snout, and the reduction or absence of the antorbital fenestrae (a pair of holes in the snout in front of each orbit).〔 A close relationship between Goniopholididae and Pholidosauridae conflicts with the hypothesis that pholidosaurids are instead more closely related to the family Dyrosauridae.〔 This alternate phylogeny was found in many analyses, including Jouve ''et al.'' (2006), Pol and Gasparini (2009), and de Andrade ''et al.'' (2011), who named the clade Tethysuchia. In both studies, Goniopholididae was found to be a more distantly related clade within Neosuchia. ==References== 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「Coelognathosuchia」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.