Phylum Mollusca Linnaeus, 1758 - molluscs Subphylum Conchifera Gegenbauer, 1878 Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Orthogastropoda Ponder & Lindberg, 1995 Superorder Caenogastropoda Cox, 1960 Order Sorbeoconcha Ponder & Lindberg, 1997 Suborder Discopoda Fischer, 1884 Superfamily Cerithioidea Fleming, 1822 Family Siliquariidae Anton, 1838