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Acidiscus
''Acidiscus'' is an extinct genus of eodiscinid agnostid trilobites. It lived during the Botomian stage of the Cambrian period.〔 == Etymology == ''A. birdi'' is named for Dr. John M. Bird who collected the holotype.〔 ''A. hexacanthus'' is derived from the Greek hexa "six" and acanthos "spine", for having two pairs of border spines in addition to one pair of genal spines.
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「Acidiscus」の詳細全文を読む
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