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''Gaudryceras'' is an ammonite genus belonging to the family Gaudryceratidae. These cephalopods were fast-moving nektonic carnivores. They lived in the Cretaceous period, from Albian to Maastrichtian stages (105.3 to 66.043 Ma). 〔 (Fossilworks )〕〔 Sepkoski, Jack (Sepkoski's Online Genus Database – Cephalopodes ) 〕 ==Subgenera and species== Subg. ''Gaudryceras (Gaudryceras) '' de Grossouvre 1894 :''Gaudryceras (Gaudryceras) cassisianum'' d'Orbigny 1850 :''Gaudryceras (Gaudryceras) mitis'' Hauer 1866 :''Gaudryceras (Gaudryceras) strictum'' Kennedy et al. 2007 Subg. ''Gaudryceras (Mesogaudryceras)'' Spath 1927 :''Gaudryceras (Mesogaudryceras) leptonema'' Sharpe 1855 Subg. ''Gaudryceras (Neogaudryceras)'' Shimizu 1935 :''Gaudryceras (Neogaudryceras) pictum'' Yabe 1903 :''Gaudryceras beantalyense'' Collignon 1956 :''Gaudryceras denseplicatum'' Jimbo 1894 :''Gaudryceras kayei'' Forbes 1846 :''Gaudryceras makarovense'' Shigeta and Maeda 2005 :''Gaudryceras seymouriense'' Macellari 1986 :''Gaudryceras stefaninii'' Venzo 1936 :''Gaudryceras tenuiliratum'' Yabe 1903 :''Gaudryceras varagurense'' Kossmat 1895 :''Lytoceras varagurense patagonicum'' Paulcke 1907 :''Gaudryceras varicostatum'' van Hoepen 1921 :''Lytoceras (Gaudryceras) alamedense'' Smith 1889 :''Lytoceras (Gaudryceras) aureum'' Anderson 1958 :''Lytoceras (Gaudryceras) delvallense'' Anderson 1958 :''Lytoceras (Gaudryceras) denmanense'' Whiteaves 1903 :''Lytoceras (Gaudryceras) texanum'' Anderson 1958 〔 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「Gaudryceras」の詳細全文を読む スポンサード リンク
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