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 Valvatoidea Gray, 1840
           Family Valvatidae Gray, 1840
             1 Genus Valvata Müller, 1774
             2 Genus Andrusovia Brusina, 1903
             3 Genus Borysthenia Lindholm, 1914
             4 Genus Cornirostra Ponder, 1990
             5 Genus Megalovalvata Lindholm, 1906
             6 Genus Microcyclas Raspail, 1909