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Hemipneustes : ウィキペディア英語版 | Hemipneustes
''Hemipneustes'' is an extinct genus of sea urchins belonging to the family Holasteridae. These semi-infaunal detritivores lived during the Upper Cretaceous period, from 70.6 to 66.043 Ma. Fossils of this genus have been found in the sediments of Netherlands, Belgium, Bulgaria, India, Iran, the Netherlands, Oman and Spain. 〔 ==Description== ''Hemipneustes'' is a quite large sea urchin with a high-domed profile and a well-defined anterior sulcus. 〔 (Natural History Museum )〕
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「Hemipneustes」の詳細全文を読む
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