class Archiannelida
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| Noun | 1. | class Archiannelida - a class of Annelida Annelida, phylum Annelida - segmented worms: earthworms; lugworms; leeches archiannelid - small primitive marine worm lacking external segmentation and resembling polychaete larvae class - (biology) a taxonomic group containing one or more orders |
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