Class Bivalvia Linnaeus, 1758 - bivalves Subclass Autobranchia Grobben, 1894 Superorder Heteroconchia Gray, 1854 Clade Heterodonta Neumayr, 1884 Superfamily †Anthracosioidea Amalitzky, 1892 Family †Shaanxiconchidae Liu, 1980