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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 Acanthoceratites ： ウィキペディア英語版 Ceratites ''Ceratites'' ("Horn Stone") is an extinct genus of ammonite cephalopod. These nektonic carnivores lived in marine habitats in what is now Europe, Asia, and North America, during the Triassic, from Anisian to Ladinian age. 〔 Sepkoski, Jack (Sepkoski's Online Genus Database – Cephalopoda )〕 ==Description== This ammonite has a ceratitic suture pattern on its shell (smooth lobes and frilly saddles). Evolution of the frilly saddles is thought to be due to increased pressure on the shell, at greater depth. The frilly pattern would increase the strength of the shell and allow ''Ceratites'' to dive deeper, possibly in search of food. 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「Ceratites」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.