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''Zenaspis'' is an extinct genus of jawless fish which existed during the early Devonian period. Due to it being jawless Zenaspis was probably a bottom feeder. The fish was around 10 inches in length. ==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「Zenaspis」の詳細全文を読む スポンサード リンク
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