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Totoralia is a genus of limpet-like helcionellid known from Cambrian deposits including the Burgess Shale. It comprises two species. T. reticulata bears a net-like pattern spread over a series of concentric ridges.〔 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「Totoralia」の詳細全文を読む スポンサード リンク
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