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 Cypraeoidea Rafinesque, 1815
                   1 Family Cypraeidae Rafinesque, 1815 - cowries
                   2 Family Ovulidae Fleming, 1822 - egg snails
                   3 Family Pediculariidae J.E. Gray, 1853 see Subfamily Pediculariinae Gray, 1853