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. Mollusca (phylum)
8. Bivalvia (class)
9. Pteriomorphia (subclass)
10. Ostreoida (order)

Anotations

Scope note:

General term used to refer to several species of bivalve mollusks of family Ostreidae and and of other families, found in marine habitats or brackish water; certain species (of family Ostreidae) are used by humans for food; certain others of other families are used for producing pearls.