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
             Subfamily Odostomiinae Casey, 1904
               Genus Syrnola Adams, 1860
                 01 Subgenus Syrnola Adams, 1860
                 02 Subgenus Agatha Adams, 1860 see Genus Agatha Adams, 1860
                 03 Subgenus Angustispira Pelseneer, 1912
                 04 Subgenus Colsyrnola Iredale, 1929
                 05 Subgenus Iphiana Dall & Bartsch, 1904
                 06 Subgenus Lysacme Dall & Bartsch, 1904
                 07 Subgenus Loxoptyxis Cossmann, 1888
                 08 Subgenus Pachysyrnola Cossmann, 1907
                 09 Subgenus Stylopsis Adams, 1860
                 10 Subgenus Styloptygma Adams, 1860 see Genus Styloptygma Adams, 1860
                 11 Subgenus Vagna Dall & Bartsch, 1904