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. Arthropoda (phylum)
8. Crustacea (subphylum)

Narrower term/s

• Cirripedia (subclass)

Anotations

Scope note:

Members of a class of around 23,000 species of ancient, relatively small, primarily marine crustaceans including barnacles, copepods, mystacocarids, tantulocarids, branchiurans, ostracods, and related groups, having five pairs of head appendages, a single median eye, and up to 11 trunk segments.