Phylum Mollusca Linnaeus, 1758 - molluscs Class Bivalvia Linnaeus, 1758 - bivalves Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884 Order Chamida see Order Venerida Gray, 1854 Superfamily Veneroidea Rafinesque, 1815 Family Turtoniidae Clark, 1855 [monotypic] see Subfamily Turtoniinae Clark, 1855 1 Genus Turtonia Alder, 1848