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 Erhaiini Davis & Kuo, 1985 [monotypic] see Subfamily Amnicolinae Tryon, 1863
                 1 Genus Erhaia Davis & Kuo, 1985