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Noun1.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
References in periodicals archive ?
Traditionally, a common origin has been attributed to several of these families, which have been historically placed in the order Archiannelida (e.g.