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 Anomalodesmata Dall, 1889 see Order Anomalodesmata Dall, 1889 Genus †Grammysia de Verneuil, 1847