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''Zigzagiceras'' is an extinct cephalopod genus belonging to the order Ammonoidea, that lived during the upper Bathonian stage of the Middle Jurassic. They were fast-moving nektonic carnivores. ==References== ;Notes 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「Zigzagiceras」の詳細全文を読む スポンサード リンク
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