Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Mollusca Linnaeus, 1758 - molluscs
           Subphylum Conchifera Gegenbauer, 1878
             Order Monotocardia
               Suborder Taenioglossa see Order Mesogastropoda Thiele, 1925
                 Superfamily Littorinoidea Children, 1834
                   1 Family Pomatiasidae Gray, 1852 see Family Pomatiidae Newton, 1891 (1828)
                   2 Family Chondropomidae see Family Annulariidae Henderson & Bartsch, 1920
                   3 Family Littorinidae Children, 1834 - periwinkles
                   4 Family Lacunidae Gray, 1857 see Subfamily Lacuninae Gray, 1857