Class Bivalvia Linnaeus, 1758 - bivalves Subclass Autobranchia Grobben, 1894 Superorder Heteroconchia Gray, 1854 Clade Heterodonta Neumayr, 1884 Order Venerida Gray, 1854 Superfamily Cardioidea Lamarck, 1809 [monotypic] Family Cardiidae Lamarck, 1809 - cockles Subfamily Lymnocardiinae Stoliczka, 1870 Tribe †Pseudocarditini Keen, 1969