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 Hypsogastropoda Ponder & Lindberg, 1997
Infraorder Littorinimorpha Pchelintsev, 1963
Superfamily Tonnoidea Suter, 1913 (1825)
Family Cassidae P.A. Latreille, 1825 - helmet snails
see Subfamily Cassinae Latreille, 1825
Subfamily Oocorythinae Fischer, 1885