Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758 Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795 Clade Neritimorpha Koken, 1896 see Order Neritimorpha Golikov & Starobogatov, 1975 Clade Cycloneritimorpha Frýda, 1998 Superfamily Neritopsoidea Gray, 1847 Family †Pseudorthonychiidae Bandel & Frýda, 1999