Kingdom Animalia Linnaeus, 1758 - animals Phylum Mollusca Linnaeus, 1758 - molluscs Subphylum Diasoma Runnegar & Pojeta Jr., 1974 see Phylum Mollusca Linnaeus, 1758 Class Pelecypoda Goldfuss, 1820 see Class Bivalvia Linnaeus, 1758 Subclass Heteroconchia Gray, 1854 see Superorder Heteroconchia Gray, 1854 Genus †Granocardium Gabb, 1868