animal kingdom, Animalia, kingdom Animalia - taxonomic kingdom comprising all living or extinct animals

annelid, annelid worm, segmented worm - worms with cylindrical bodies segmented both internally and externally

Archiannelida, class Archiannelida - a class of Annelida

class Oligochaeta, Oligochaeta - earthworms

class Polychaeta, Polychaeta - marine annelid worms

class Hirudinea, Hirudinea - hermaphroditic aquatic or terrestrial or parasitic annelids

phylum - (biology) the major taxonomic group of animals and plants; contains classes