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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 Pycnodus ： ウィキペディア英語版 Pycnodus ''Pycnodus'' (from Greek for ''crowded teeth'') is an extinct genus of ray-finned fish ranging from the Cretaceous to Eocene periods. As its name suggests, it is the type genus of Pycnodontiformes. The known whole fossils of ''Pycnodus'' are around long, and have a superficial resemblance to angelfish or butterflyfish. The animals, as typical of all other pycnodontids, had many knob-like teeth, forming pavements in the jaws with which to break and crush hard food substances, probably mollusks and echinoderms. These teeth are the most common form of fossil. ''Pycnodus'' fossils have been found in present-day India, Northern Africa, Belgium, England, and Italy, regions corresponding with the Tethys Ocean ==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「Pycnodus」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.