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| taxon = Euaptetoceras | authority = Buckman, 1922 | Subdivision_ranks = Species | subdivision = * See text}} ''Euaptetoceras'' is an evolute hammatoceratid ammonite from the lower Middle Jurassic, included in the family Hammatoceratidae and the subfamility Hammatoceratinae. The genus may be a junior synonym for ''Eudmetoceras'' of Buckman, 1920. The shell of ''Euaptetoceras'' has an evolute, compressed, discoidal shape with a whorl section higher than wide. The inner whorls have long primary ribs while the outer whorls become smooth. The venter, which is the outer rim, is narrowly to sharply rounded and its suture is rather complex. ''Eudmetoceras'' is found in strata of Europe, Iran, and Argentina. ==References== * Arkell, ''et al.'', 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L (Mollusca 4, Ammonoidea). Geological Soc. of America and Univ. Kansas Press. * (Paleobiology Database - ''Euaptetoceras'' entry ) 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「Euaptetoceras」の詳細全文を読む スポンサード リンク
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