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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 Hadrosteidae ： ウィキペディア英語版 Hadrosteidae Hadrosteidae is a family of arthrodire placoderms from the Late Devonian. It was originally erected for the late Frasnian ''Hadrosteus'', from the Kellwasserkalk facies. Later, the family was subjectively subsumed into Dinichthyidae due to ''Hadrosteus''' anatomical similarities with ''Dunkleosteus'' and ''Dinichthys''. In 1967, Obruchev placed the enigmatic arthrodire ''incertae sedis'' ''Diplognathus'', from the Eastern American Famennian, within Hadrosteidae, on the basis of how the two genera have similar denticle ("teeth") patterns of the inferognathals, though, Denison (1978) contests this placement. With the redefining of Dinichthyidae as a monotypic family for ''Dinichthys'', and only a few other genera placed within Dunkleosteidae, Hadrosteidae is now seen as a valid family again.〔Carr, R.K. & W.J. Hlavin, 2010: Two new species of ''Dunkleosteus''〕 ==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「Hadrosteidae」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.