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 Neotaenioglossa Haller, 1882 see Order Sorbeoconcha Ponder & Lindberg, 1997
           Superfamily Littorinoidea Children, 1834
             Family Littorinidae Children, 1834 - periwinkles
               1 Genus †Procanellaria Millard, 1996, orth. inval. see Genus Procancellaria Wilckens, 1922
               2 Genus Melaraphe Adams & Adams, 1854, orth. inval. see Genus Melarhaphe Menke, 1828
               3 Subfamily Littorininae Children, 1834
               4 Subfamily Risellinae Kesteven, 1903 [monotypic] see Subfamily Lacuninae Gray, 1857
               5 Subfamily Tectariinae Rosewater, 1972 see Subfamily Littorininae Children, 1834
               6 Subfamily Echinininae Rosewater, 1972 [monotypic] see Subfamily Littorininae Children, 1834
               7 Subfamily Bembiciinae Finlay, 1928 see Subfamily Lacuninae Gray, 1857