Class Bivalvia Linnaeus, 1758 - bivalves Subclass Autobranchia Grobben, 1894 Superorder Heteroconchia Gray, 1854 Clade Heterodonta Neumayr, 1884 Superfamily †Kalenteroidea Marwick, 1953 [monotypic] 1 Family †Kalenteridae Marwick, 1953