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asaphidae
Asaphidae is the most widely distributed and most species-rich Ordovician trilobite family. 754 species assigned to 146 genera are included in the Asaphidae. == Distribution == Most Asaphinae are characteristic of Baltica. The Isotelinae are concentrated in Laurentia. The Nobiliasaphinae are distributed in tropical Gondwana and South China. The Ogygiocaridinae occur in Avalonia, Gondwana and Baltica. Asaphidae were already fairly common during the Upper-Cambrian, when 14 genera are known from Australia, North- and South-China. They died-out at the end of the Ordovician.
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「asaphidae」の詳細全文を読む
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