Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960
         Suborder Architaenioglossa Haller, 1890
           Superfamily Cerithioidea Fleming, 1822
             Family Dialidae Kay, 1979
               1 Genus Diala Adams, 1861
               2 Genus Dialopsis Cossmann, 1888
               3 Genus Laevitestea Ponder, 1985, orth. inval. see Genus Laevitesta Laseron, 1950
               4 Genus Mellitestea Laseron, 1956
               5 Genus Paradiala Laseron, 1956
               6 Genus Rissoalaba Oyama, 1954