Phylum [Mollusca] Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Neogastropoda Wenz, 1938 see Suborder Neogastropoda Wenz, 1938
         Suborder Toxoglossa (Troschel, 1848) see Superfamily Conacea Rafinesque, 1815
           Superfamily Conacea Rafinesque, 1815 see Superfamily Conoidea Fleming, 1822
             Family Turridae Adams & Adams, 1853 (1838) - turret snails
               Subfamily Cochlespirinae Powell, 1942
                 Genus Vexitomina Powell, 1942 see Genus Paradrillia Makiyama, 1940