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Cretoxyrhina : ウィキペディア英語版 | Cretoxyrhina
''Cretoxyrhina mantelli'' was a large shark that lived about 100 to 82 million years ago, during the late Cretaceous period. It is nicknamed the Ginsu shark in reference to the Ginsu knife,〔(【引用サイトリンク】url=http://animals.nationalgeographic.com/animals/prehistoric/cretoxyrhina/ )〕 since it fed by slicing into its victims with its knife-sharp teeth. It had no common name in the early literature, although over 30 synonyms were assigned to it.〔 Its genus name is ''creto-'' (for "Cretaceous") prefixed to ''Oxyrhina'' ("sharp-nosed"), its original name. ==Known physiology==
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「Cretoxyrhina」の詳細全文を読む
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