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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Plesiocidaris ： ウィキペディア英語版 Plesiocidaris ''Plesiocidaris durandi'' is an extinct species of sea urchin. Including its spines, the creature was 13 cm (5 in) wide. Its remains have been found in Drâ el-Ahmar, near the Atlas Mountains in Oran, Algeria. A Commander Durand found the fossils there in 1870 and sent them to French paleontologists. The exact location of the find was not noted and has not been rediscovered since. The species name, ''durandi'', refers to Commander Durand. Most ''Plesiocidaris'' fossils still have the spines attached, indicating they lived in calm water; the spines of dead sea urchins are easily detached by wave currents. 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「Plesiocidaris」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.