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Agoniatites
''Agoniatites'' is a genus of primitive ammonoids belonging to the order Agoniatitida family Agoniatitidae. Species of this genus were fast-moving nektonic carnivore shelled ammonoids. They lived in the Eifelian and Givetian ages of the middle Devonian period, which occurred 385.3-397.5 million years ago. Vanuxemi agoniatites is a rare species in this group which is the only ammonoid found in the Hamilton Group (Mahantango Formation) in Pennsylvania and New York. ==Fossil distribution== Devonian of Algeria, Canada (Northwest Territories), the Czech Republic, Morocco, Russia, United States (Alaska, Nevada, New York, Pennsylvania)
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「Agoniatites」の詳細全文を読む
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