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. Vertebrata (subphylum)
9. Chondrichthyes (class)

Additional parents:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms
4. living organisms
5. Eukaryota
6. Animalia
7. Chordata
8. Vertebrata
9. fish

Anotations

Scope note:

Members of one of the two subclasses of cartilaginous fishes (the other being the Elasmobranchii), containing only one living order, Chimaeriformes, but having an extensive fossil record.