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
             1 Genus Siphonaria Sowerby, 1823
             2 Genus Anthosiphonaria Kuroda & Habe, 1971
             3 Genus Williamia Monterosato, 1884
             4 Genus Siphonacmea Habe, 1958