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''Lithacoceras'' is an extinct Ammonite cephalopod genus included in the superfamily Perisphinctaceae. These fast-moving nektonic carnivores lived during the Jurassic period, from the Oxfordian age to the Tithonian age. 〔 Sepkoski, Jack (Sepkoski's Online Genus Database – Cephalopoda )〕 ==Species== *''Lithacoceras achilles'' d'Orbigny *''Lithacoceras magnum'' *''Lithacoceras picunleufuense'' Parent et al. 2011 *''Lithacoceras tarodaense'' Kobayashi 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「Lithacoceras」の詳細全文を読む スポンサード リンク
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