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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Baeopleuroceras ： ウィキペディア英語版 Baeopleuroceras ''Baeopleuroceras'' is a genus included in the Barrandeoceroid family Nephriticeratidae, found in Middle Devonian sediments in eastern North America (NY, Penn, Ont.) The shell of ''Baeopleuroceras'' is a short, rapidly expanding cyrtocone, curved through at least 90 degrees. The body chamber is one half the overall shell length. The siphuncle is subcentral with segments slightly expanded into the chambers. ''Rhadinoceras'' and ''Nephriticeras'' are somewhat similar genera from within the Nephriticeratidae, except that in both the siphuncle is displaced between the center and the dorsum. ==''References''== * Walter C. Sweet, 1974. Nautiloidea-Barrandeocerida. Treatise on Invertebrate Paleontology Part K Mollusca 3. Geological Society of America and University of Kansas Press. * (Baeopleuroceras ) brief in Paleodb, 6/20/12 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「Baeopleuroceras」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.