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 Odostomiidae Casey, 1904 see Tribe Odostomiini Casey, 1904
                 1 Subfamily Chrysallidinae Saurin, 1958 see Tribe Chrysallidini Saurin, 1958
                 2 Subfamily Cyclostremellinae D.R. Moore, 1966 see Tribe Cyclostremellini Moore, 1966
                 3 Subfamily Odostomellinae Saurin, 1959 see Tribe Odostomellini Saurin, 1959
                 4 Subfamily Odostomiinae Casey, 1904