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archiannelid

n. small primitive marine worm lacking external segmentation and resembling polychaete larvae

1、原环虫类

原环虫类(Archiannelid),原环虫在环节动物门中比较原始,种数不多,迄今所知,仅有70种。原环虫在系统分类和教学上是很重要的一个类群。

n.small primitive marine worm lacking external segmentation and resembling polychaete larvae

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