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Epicephalites : ウィキペディア英語版 | Epicephalites
''Epicephalites'' is a perisphictid ammonite, included in the subfamily Aulacostephaninae, from the Upper Jurassic of New Zealand and Mexico, related to ''Involuticeras''. Its shell is involute, whorls inflated with a deep umbilicus. The outer half including the venter is ribbed, the inner half is smooth. ==References==
* Treatise on Invertebrate Paleontology, Part L (1957), Mesozoic Ammonoidea. p. 327.
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「Epicephalites」の詳細全文を読む
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