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
             Genus Borysthenia Lindholm, 1914
               1 Subgenus Pamirocincinna Sitnikova & Starobogatov, 1983
               2 Subgenus Siberovalvata Vaught, 1989, orth. inval. see Subgenus Sibirovalvata Starobogatov & Streletzkaja, 1967