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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 Edestidae ： ウィキペディア英語版 Edestidae Edestidae is a poorly known, extinct family of shark-like eugeneodontid holocephalid cartilaginous fish. Similar to the related family of Helicoprionidae, members of this family possessed a unique "tooth-whorl" on the symphysis of the lower jaw as well as pectoral fins supported by long radials. In addition to having a tooth-whorl on the lower jaw, at least species of the genus ''Edestus'' had a second tooth-whorl in the upper jaw. The palatoquadrate was either fused to the skull or reduced. Edestids, along with the rest of Eugeneodontida, are placed within Holocephali.〔Tapanila, L., Pruitt, J., Pradel, A., Wilga, C., Ramsay, J., Schlader, R., Didier, D. 2013. Jaws for a spiral-tooth whorl: CT images reveal novel adaptation and phylogeny in fossil Helicoprion. Biology Letters. 10.1098/rsbl.2013.0057〕 ==External links== *(Palaeos Vertebrates 70.100 Chondrichthyes: Eugnathostomata Paleos.com ) at paleos.com *(JSTOR: Journal of PaleontologyVol. 70, No. 1 (Jan., 1996), pp. 162-165 ) *(Mikkk's phylogeny Archive ) 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「Edestidae」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.