Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960
         Superfamily Rissooidea Gray, 1847
           Family Pomatiopsidae Stimpson, 1865
             Subfamily Triculinae Annandale, 1924
               Tribe Triculini Annandale, 1924
                 01 Genus Tricula Benson, 1843
                 02 Genus Halewisia Davis, 1979
                 03 Genus Pachydrobia Crosse & Fischer, 1876
                 04 Genus Robertsiella Davis & Greer, 1980
                 05 Genus Lacunopsis Deshayes, 1876
                 06 Genus Neotricula Davis, 1986
                 07 Genus Fenouilia Heude, 1889
                 08 Genus Delavaya Heude, 1889
                 09 Genus †Paraprososthenia Annandale, 1919
                 10 Genus Siberobythynella Vaught, 1989, orth. inval. see Genus Sibirobythinella Ioganzen & Starobogatov, 1982