Phylum Mollusca Linnaeus, 1758 - molluscs Class Bivalvia Linnaeus, 1758 - bivalves Subclass Pteriomorphia Beurlen, 1944 see Superorder Pteriomorphia Beurlen, 1944 Order Arcida Gray, 1854 1 Suborder Arcina Stoliczka, 1871 see Order Arcida Gray, 1854