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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 Beyrichoceratoides ： ウィキペディア英語版 Beyrichoceratoides ''Beyrichoceras'' is a genus belonging to the Goniatitid family, Muensteroceratidae〔( Paleobiology Database -Beyrichoceratoides )〕 , a group of ammonoids, extinct shelled cephalopods related to belemnites and recent coleoids and more distantly to the nautiloids ==Description== ''Beyrichoceratoides'' has a smooth involute discoidal shell with a very narrow umbilicus, non-crenulate biconvex growth lines, and well-developed ventro-lateral salients and deep hyponomic sinus.〔( GONIAT ) online〕 The ventral lobe of the suture is moderately narrow and straight sided; bifuracated with short prongs separated by a low median saddle. The first lateral and umbilical lobes are like those of ''Beyrichoceras'', broad and V-shaped, only the first lateral one is more symmetrical in ''Beyrichoceratoides''. The internal dorsal and flanking lobes are also like those of ''Beyrichoceras'' but with the flanking lobes set relatively further apart.〔Miller, Furnish, and Schindewolf, 1957, Paleozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L, Mollusca 4.〕 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「Beyrichoceratoides」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.