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''Oodiscus'' is an extinct genus of small size (about ) trilobite, with three known species. It lived during the Toyonian it what are now Canada and the USA. == Distribution == ''O. subgranulatus'' is known from the upper Lower Cambrian of the USA (New York, Griswold Farm) and Canada (Newfoundland). 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「Oodiscus」の詳細全文を読む スポンサード リンク
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