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 Pomatiopsinae Stimpson, 1865
               Tribe Pomatiopsini Stimpson, 1865 see Subfamily Pomatiopsinae Stimpson, 1865
                 1 Genus Pomatiopsis Tryon, 1862
                 2 Genus Blanfordia Adams, 1863
                 3 Genus Cecina Adams, 1861
                 4 Genus Coxiela Millard, 1996, orth. inval. see Genus Coxiella Smith, 1894
                 5 Genus Fukuia Abbott & Hunter, 1949
                 6 Genus Idiopyrgus Pilsbry, 1911
                 7 Genus Oncomelania Gredler, 1881
                 8 Genus Tomichia Benson, 1851