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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 Loganellia ： ウィキペディア英語版 Loganellia ''Loganellia'' is a genus of jawless fish which lived between 430 - 370 million years ago, during the Devonian and Silurian epochs of the Paleozoic. ''Loganellia'' belonged to the Thelodonti class and like other Thelodonts possessed scales instead of plate armor. ''Loganellia'' are thought to be more closely related to the crown group of gnathostomes than conodonts. They are noted for their denticle whorls - oropharyngeal denticles that lined their branchial bars - which are thought to be homologous with other, later gnathostome teeth. In this sense, ''Loganellia'' may possess the earliest known dental structures related to modern teeth, and would have evolved in the throat, rather than through dermal denticles or jaws.〔 ==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「Loganellia」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.