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Parapuzosia bradyi : ウィキペディア英語版 | Parapuzosia bradyi
''Parapuzosia bradyi'' is a gigantic species of ammonite, reaching diameters of more than by . It is the largest species of ammonite in North America. It had a moderately involute shell with flat sides. The inner whorls are slightly oval-shaped with prominent ribbing. They are only known from the upper layers of the Eagle Sandstone and Cody Shale formations (both Late Cretaceous). ==References==
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「Parapuzosia bradyi」の詳細全文を読む
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