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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 Ukhtoceras ： ウィキペディア英語版 Ukhtoceras ''Ukhtoceras'' is a cephalopod genus included in the nautiloid order Discosorida that lived during the Devonian. Its range was thought at first to be limited to the Frasnian (Late Devonian). With discovery of ''Ukhtoceras hidense'' from a Lower Devonian shale in Japan the stratigraphic range was thus lowered as well as its geographic range extended. The type is ''Ukhtoceras asser'' (Nalivkin 1930). This genus is sometimes put in the Ukhtoceratidae. ==References== *Jack Sepkoski's list of cephalopod genera, 2000. () *(''Ukhtoceras hidense'' ) *(''Ukhtoceras'' ) in Fossilworks, 10-15-2014 *Global names index () 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「Ukhtoceras」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.