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''Eulytoceras'' is an extinct genus of ammonoid cephalopods belonging to the family Lytoceratidae. These fast-moving nektonic carnivores 〔 lived in the Cretaceous period, from Hauterivian age to Barremian age.〔Sepkoski, Jack (Sepkoski's Online Genus Database – Cephalopoda )〕 ==Species== 〔 * ''Eulytoceras anisoptychum'' Uhlig 1883 * ''Eulytoceras inaequalicostatus'' d'Orbigny 1840 * ''Eulytoceras phestum'' Matheron 1878 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「Eulytoceras」の詳細全文を読む スポンサード リンク
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