Genus:
Oistotrigonia >
Family:
Pterotrigoniidae >
Superfamily:
Megatrigonioidea >
Order:
Trigoniida >
Subterclass:
Palaeoheterodonta >
Infraclass:
Heteroconchia >
Subclass:
Autobranchia >
Class:
Bivalvia >
Phylum:
Mollusca >
Kingdom:
Animalia >
Unranked:
Biota >