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Acmarhachis
''Acmarhachis'' is a genus of trilobite in the order Agnostida, which lived in what are now Australia (Queensland, Tasmania), Canada (British Columbia, Newfoundland, Northwest Territories), China (Anhui), Kazakhstan, Russia (Kharaulakh), and the US (Alaska, Alabama, Nevada, Maryland, Vermont). It was described by Resser in 1938, and the type species is ''Acmarhachis typicalis''.〔(Available Generic Names for Trilobites ) P.A. Jell and J.M. Adrain.〕 == Distribution ==
* ''A. typicalis'' occurs in the Cambrian of Kazakhstan (Kyrshabakty River, ''Lejopyge laevigata''-trilobite zone, Zhumabai Formation, Paibian and Cambrian Stage 9, 43.5° N, 70.0° E).〔 ''cited in'' (【引用サイトリンク】title= Acmarhachis whittingtoni )〕 * ''A. whittingtoni'' is known from the Upper Cambrian of Canada (Hickey Cove, ''Dunderbergia''-trilobite zone, Downes Point Member, Shallow Bay Formation, Paibian, Newfoundland, 49.8° N, 57.9° W).〔 ''cited in'' (【引用サイトリンク】title= Acmarhachis whittingtoni )〕
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