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The Pinacocerataceae are generally smooth, compressed, evolute to involute ammonoids from the Triassic, belonging to the Ceratitida, in which the suture is ammonitic, with adventitious and auxiliary elements. As presently conceived, the Pinacocerataceae, named by Mojsisovics, 1879, combines six families; the: *Pinacoceratidae *Carnitidae *Gymnitidae *Isculitidae *Klamathitidae *Sagenitidae In the Treatise, Part L, the superfamily included only the Pinacoceratidae and Gymnitidae. Of the families more newly included in the Pinacocerataceae, the Carnitidae was removed from the Ceratitaceae and the Isculitidae from the Ptychitaceae. ''Klamathites'' was removed from the Carnitidae as type for the Klamathitidae. The Sagenitidae is based on the subfamily Sagenitinae of the tropitacean family Haloritidae. Fossils have been found in Triassic sediments in the United States in California, Nevada, and Alaska; in Canada in British Columbia; in Europe widespread; in China, Russia, Afghanistan, and Vietnam. ==''References''== *(Pinacocerataceae ) (Paleobiology DB ) * Treatise on Invertebrate Paleontology, Part L, Ammonoidea. R. C. Moore (ed). Geological Society of America and Univ of Kansas press, 1957 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「Pinacocerataceae」の詳細全文を読む スポンサード リンク
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