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Araxoceratidae : ウィキペディア英語版 | Araxoceratidae
Araxoceratidae is an extinct family of ceratitid ammonite cephalopods that were found throughout the world. They arose during the Permian and died out during the early Triassic. The species of the type genus ''Araxoceras'' are used as markers for various Permian epochs. ==References==
* (The Paleobiology Database ) Accessed on 9/24/07
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「Araxoceratidae」の詳細全文を読む
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