Phylum [Mollusca] Linnaeus, 1758 - molluscs Class Bivalvia Linnaeus, 1758 - bivalves Order Arcoida see Order Pteriomorpha Beurlen, 1944 Superfamily Limopsacea Dall, 1895, nom. illeg. see Superfamily Limopsoidea Dall, 1895 Family Glycymerididae Dall, 1908 (1847) - glycymerids Subfamily Glycymeridinae Dall, 1908 (1847) 1 Genus Glycymeris da Costa, 1778