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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 Ateleaspis ： ウィキペディア英語版 Ateleaspis ''Ateleaspis'' is an extinct genus of primitive ostracoderm fish that lived in the Early Silurian to Early Devonian periods. Like other ostracoderms, ''Ateleaspis'' had a head shield similar to that of ''Cephalaspis''. Species from Silurian period were found in Norway and Scotland, but now has been found also in Siberia from Early Devonian period. ==Description== ''Ateleaspis'' possibly is the most basal vertebrate with paired fins. ''Ateleaspis'' was a small fish (about 15 - 20 cm) and had a flat headshield a narrow trunk covered by brick-like scales. 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「Ateleaspis」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.