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''Eochuangia'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Cambrian Period,〔 which lasted from approximately 541 to 488 million years ago. ==References== 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「Eochuangia」の詳細全文を読む スポンサード リンク
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