Phylum Mollusca Linnaeus, 1758 - molluscs Class Bivalvia Linnaeus, 1758 - bivalves Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884 Order Venerida Gray, 1854 Superfamily Carditoidea Férussac, 1822 Family Carditidae Férussac, 1822 - little heart shells Subfamily Carditinae Férussac, 1822 Genus Claibornicardia Stenzel & Krause, 1957