Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Divasibranchia Minichev & Starobogatov, 1975
       Order Basommatophora Keferstein, 1865 see Suborder Basommatophora Keferstein, in Bronn, 1864
         Superfamily Siphonarioidea Gray, 1827
           Family Siphonariidae Gray, 1827
             Genus Siphonaria Sowerby, 1823
               Subgenus Simplisiphonaria Hubendick, 1945