Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Heterobranchia Burmeister, 1837 [monotypic] see Superorder Heterobranchia Burmeister, 1837
       Order Heterostropha Fischer, 1885
         Superfamily Pyramidelloidea Gray, 1840
           Family Pyramidellidae Gray, 1840
             01 Genus Atomiscala Boury, 1909
             02 Genus Aartsenia Warén, 1991
             03 Genus Rissopsetia Dell, 1956
             04 Genus Pseudoscilla Boettger, 1902
             05 Genus Clathrella Récluz, 1864
             06 Subfamily Pyramidellinae Gray, 1840
             07 Subfamily Odostomiinae Casey, 1904
             08 Subfamily Turbonillinae Bronn, 1849 [monotypic]
             09 Subfamily Amathininae Ponder, 1987 see Family Amathinidae Ponder, 1987
             10 Subfamily Cyclostremellinae D.R. Moore, 1966 [monotypic] see Tribe Cyclostremellini Moore, 1966
             11 Genus Aphalista Laseron, 1959
             12 Genus Eurathea Laseron, 1959
             13 Genus Exesilla Laseron, 1959
             14 Genus Instarella Laseron, 1959
             15 Genus Kunopia Laseron, 1959
             16 Genus Mormulasta Laseron, 1959
             17 Genus Paradoxella Laseron, 1959
             18 Genus Quirella Laseron, 1959
             19 Genus Tathrella Laseron, 1959
             20 Genus Urambella Laseron, 1959
             21 Genus Wingenella Laseron, 1959
             22 Genus Zaphella Laseron, 1959
             23 Genus Zonella Laseron, 1959
             24 Genus Plicifer Adams, 1868
             25 Genus Pseudoskenella Ponder, 1973