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''Glyptocrinus'' is an extinct genus of sea lily that lived from the Middle Ordovician to the Early Silurian (471.8 - 436.0 Ma). Its remains have been found in North America. == References == 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「Glyptocrinus」の詳細全文を読む スポンサード リンク
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