Genus:
Castaliella >
Tribe:
Castaliini >
Subfamily:
Hyriinae >
Family:
Hyriidae >
Superfamily:
Unionoidea >
Order:
Unionida >
Subterclass:
Palaeoheterodonta >
Infraclass:
Heteroconchia >
Subclass:
Autobranchia >
Class:
Bivalvia >
Phylum:
Mollusca >
Kingdom:
Animalia >
Unranked:
Biota >