|
''Celmus'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the later part of the Arenig stage of the Ordovician Period,〔 approximately 471 to 478 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「Celmus」の詳細全文を読む スポンサード リンク
|