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Eodiscidae
The Eodiscidae are a family of trilobites belonging to the order Agnostida that lived during the final Lower Cambrian (late Toyonian) and the Middle Cambrian. They are small or very small, and have a thorax of two or three segments. The Eodiscidae include nine genera (see box). == Taxonomy == The Eodiscidae probably descended from the Yukoniidae.〔 cited in 〕
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「Eodiscidae」の詳細全文を読む
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