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. Chordata (phylum)
8. Tunicata (subphylum)

Anotations

Scope note:

Small class of marine tunicates that are free-floating for their entire lifespan; they have an atrial aperture directed toward the rear of each zooid, and asexual buds that form from a ventral stolon. Sometimes classified as an order instead of a class.