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''Vericeras'' is an extinct genus of actively mobile carnivorous cephalopod, essentially a Nautiloid, that lived in what would be Europe during the Silurian from 421—418.7 mya, existing for approximately .〔(PaleoBiology Database: ''Vericeras'', basic info )〕 ==Taxonomy== ''Vericeras'' was assigned to Orthocerida by Sepkoski (2002).〔J. J. Sepkoski. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560〕 ==Morphology== The shell is usually long, and may be straight ("orthoconic") or gently curved. In life, these animals may have been similar to the modern squid, except for the long shell. 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「Vericeras」の詳細全文を読む スポンサード リンク
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