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 Heterostropha Fischer, 1885
             1 Superfamily Architectonicoidea Gray, 1850
             2 Superfamily Omalogyroidea Sars, 1878
             3 Superfamily Pyramidelloidea Gray, 1840
             4 Superfamily Rissoelloidea Gray, 1850
             5 Superfamily Valvatoidea Gray, 1840