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''Ladatheca'' is a genus of hyolith that closely resembles ''Turcutheca''. It has a straight conch with a smooth internal surface, and is found with what may be its operculum. 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「Ladatheca」の詳細全文を読む スポンサード リンク
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