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
               Subfamily Littorininae Children, 1834
                 01 Genus Littorina Férussac, 1822
                 02 Genus Laevilacunaria Powell, 1951
                 03 Genus Laevilitorina Pfeffer, 1886
                 04 Genus Littoraria Gray, 1833
                 05 Genus Macquariella Finlay, 1927
                 06 Genus Mainwaringia Nevill, 1885
                 07 Genus Melarhaphe Menke, 1828
                 08 Genus Nodilittorina Martens, 1897
                 09 Genus Pellilitorina Pfeffer, 1886
                 10 Genus Problitora Iredale, 1931
                 11 Genus Prosthenodon Cossmann, 1888
                 12 Genus Risellopsis Kesteven, 1902
                 13 Genus Rissolitorina Powell, 1979, orth. inval. see Genus Rissolittorina Ponder, 1966