Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
     Clade Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960
       Clade Sorbeoconcha Ponder & Lindberg, 1997 see Order Sorbeoconcha Ponder & Lindberg, 1997
         Clade Hypsogastropoda Ponder & Lindberg, 1997 see Suborder Hypsogastropoda Ponder & Lindberg, 1997
           Clade Littorinimorpha Pchelintsev, 1963 see Infraorder Littorinimorpha Pchelintsev, 1963
             Superfamily Littorinoidea Children, 1834
               1 Family Littorinidae Children, 1834 - periwinkles
               2 Family †Bohaispiridae Youluo, 1978
               3 Family Pickworthiidae Iredale, 1917
               4 Family Pomatiidae Newton, 1891 (1828)
               5 Family †Purpurinidae Zittel, 1895
               6 Family Skeneopsidae Iredale, 1915
               7 Family †Tripartellidae Gründel, 2001
               8 Family Zerotulidae Warén & Hain, 1996