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| regnum = Animalia | phylum = Mollusca | classis = Cephalopoda | subclassis = Ammonoidea | genus = ''Oxynoticeras'' | genus_authority = | subdivision_ranks = | subdivision = }} ''Oxynoticeras'' is an extinct genus of ammonite from the Early Jurassic〔 of Europe and North America.〔 * ''The Elements of Palaeontology'' by Rhona M. Black〕 This genus is characterized by its smooth shell, with almost invisible undulations on the flank, and a sharp keel. 〔 Ludvigsen, Rolf & Beard, Graham. 1997. West Coast Fossils: A Guide to the Ancient Life of Vancouver Island. pg. 83〕 ==Distribution== Canada, Hungary and the United Kingdom 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「Oxynoticeras」の詳細全文を読む スポンサード リンク
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