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| image = | regnum = Animalia | phylum = Mollusca | classis = Cephalopoda | subclassis = Ammonoidea | ordo = Ammonitida | superfamilia = | familia = Vascoceratidae | genus = ''Neoptychites'' | genus_authority = Kossmat, 1895. |subdivision_ranks = Species |subdivision = * ''N. (Neoptychites)'' * ''N. cephalotus'' * ''N. crassus'' * ''N. telinga'' * ''N. transitorius'' * ''N. xetriformis'' }} ''Neoptychites'' is an extinct ammonoid cephalopod genus from the Turonian stage of the Upper Cretaceous, with a world wide distribution. ==Description== Neoptychites includes extremely involute Ammonitida whose outer whorls have a high triangular section with a moderately rounded venter (the outer rim). Tho body chamber in adults is generally smooth, with a constricted aperture. The earliest whorls are smooth except for periodic constrictions; later juvenile whorls have numerous low ribs without tubercles. 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「Neoptychites」の詳細全文を読む スポンサード リンク
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