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 Assimineidae Adams & Adams, 1856
             Subfamily Omphalotropidinae Thiele, 1927
               Genus Omphalotropis Pfeiffer, 1851
                 1 Subgenus Atropis Pease, 1871, nom. illeg.
                 2 Subgenus Chalicopoma Möllendorff, 1894
                 3 Subgenus Oriella Thiele, 1927
                 4 Subgenus Scalinella Pease, 1868
                 5 Subgenus Spiratropis Kobelt & Möllendorff, 1900
                 6 Subgenus Stenotropis Möllendorff, 1897
                 7 Subgenus Sychnotropis Möllendorff, 1898