Classification
Animalia [kingdom]Mollusca [phylum]
Gastropoda [class]
Opisthobranchia [subclass]
Subclassis Opisthobranchia bevat de volgende taxa:
Acochlidioidea [order]
Anaspidea [order]
Cephalaspidea [order]
Notaspidea [order]
Nudibranchia [order]
Sacoglossa [order]