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
             Superfamily Pyramidelloidea Gray, 1840
               Family Syrnolidae Saurin, 1958 see Subfamily Syrnolinae Saurin, 1958
                 1 Subfamily Syrnolinae Saurin, 1958
                 2 Subfamily Tiberiinae Saurin, 1958 see Tribe Tiberiini Saurin, 1958