Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms (hierarchy name)
4. living organisms (entities)
5. Eukaryota (domain)
6. Animalia (kingdom)
7. Annelida (phylum)

Anotations

Scope note:

Members of a class containing around 10,000 species of marine worms having well-defined segmentation of the body, differentiated head with eyes, two sexes, and swimming appendages bristles, including rag worms, lugworms, bloodworms, sea mice, and others.