Class Bivalvia Linnaeus, 1758 - bivalves Subclass Autobranchia Grobben, 1894 Superorder Pteriomorphia Beurlen, 1944 Order Arcida Gray, 1854 Superfamily †Glyptarcoidea Cope, 1996 [monotypic] 1 Family †Glyptarcidae Cope, 1996