Phylum Mollusca Linnaeus, 1758 - molluscs
   Subphylum Conchifera Gegenbauer, 1878
     Class Gastropoda Cuvier, 1795 - snails and slugs
       Subclass Orthogastropoda Ponder & Lindberg, 1995
         Superorder Heterobranchia Burmeister, 1837
           Order Pulmonata Cuvier, 1814
             Suborder Basommatophora Keferstein, in Bronn, 1864 - lower pulmonates see [unranked] Panpulmonata Jörger, Stöger, Kano, Fukuda, Knebelsberger & Schrödl, 2010
               1 Superfamily Acroloxoidea Thiele, 1931 - freshwater limpets
               2 Superfamily Amphiboloidea Gray, 1840
               3 Superfamily Chilinoidea Dall, 1870
               4 Superfamily Glacidorboidea Ponder, 1986
               5 Superfamily Lymnaeoidea Rafinesque, 1815
               6 Superfamily Planorboidea Rafinesque, 1815
               7 Superfamily Siphonarioidea Gray, 1827