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Ceratolithus : ウィキペディア英語版 | Ceratolithus
''Ceratolithus'' 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 478 to 471 million years ago. == Distribution == ''Ceratolithus'' has been found in the Lower Ordovician of China (Arenig, Meitan Formation, Central Szechwan).
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「Ceratolithus」の詳細全文を読む
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