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 Planorbioidea Vaught, 1989, orth. inval. see Superfamily Planorboidea Rafinesque, 1815
           Family Planorbidae Rafinesque, 1815 - planorbids
             Subfamily Planorbinae Rafinesque, 1815
               Tribe Segmentineae Zilch, 1959, orth. inval. see Tribe Segmentinini Baker, 1945
                 1 Genus Segmentina Fleming, 1818
                 2 Genus Acrorbis Odhner, 1937
                 3 Genus Hippeutis Charpentier, 1837
                 4 Genus Intha Annandale, 1922
                 5 Genus Lentorbis Mandahl-Barth, 1954
                 6 Genus Pingiella Baker, 1945
                 7 Genus Segmentorbis Mandahl-Barth, 1954