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''Geocoma'' is an extinct genus of brittle star that lived in the Jurassic. Its fossils are known from Europe. ==Sources== * ''Fossils'' (Smithsonian Handbooks) by David Ward (Page 189) 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「Geocoma」の詳細全文を読む スポンサード リンク
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