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Aspidaeglina : ウィキペディア英語版 | Aspidaeglina
''Aspidaeglina'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the early part of the Arenig stage of the Ordovician Period,〔 a faunal stage which lasted from approximately 473 to 470 million years ago. == Distriburion ==
* ''A. miranda'' is known from the Lower Ordovician of the Czech Republic (Arenig, Klabava Formation). * ''A. striata'' occurs in the Lower Ordovician of China (Pagoda Formation of southwestern Shaanxi).
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「Aspidaeglina」の詳細全文を読む
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