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 Stromboidea Rafinesque, 1815
               Family Aporrhaidae Gray, 1850 - pelican-foot snails
                 1 Subfamily Aporrhainae Gray, 1850
                 2 Subfamily Arrhoginae Popenoe, 1983
                 3 Subfamily †Harpagodinae Pchelintsev, 1963
                 4 Subfamily †Perissopterinae Korotkov, 1992
                 5 Subfamily †Spinigerinae Korotkov, 1992, nom. illeg.