Species:
Orthocardium gratum >
Genus:
Orthocardium >
Subfamily:
Orthocardiinae >
Family:
Cardiidae >
Superfamily:
Cardioidea >
Order:
Cardiida >
Superorder:
Imparidentia >
Subterclass:
Euheterodonta >
Infraclass:
Heteroconchia >
Subclass:
Autobranchia >
Class:
Bivalvia >
Phylum:
Mollusca >
Kingdom:
Animalia >
Unranked:
Biota >