Phylum Mollusca Linnaeus, 1758 - molluscs
Count: -
   Conchifera Gegenbaur, 1878 see Subphylum Conchifera Gegenbauer, 1878
  Count: -
     Cyrtosoma
    Count: -
       Class Gastropoda Cuvier, 1795 - snails and slugs
      Count: -
         Subclass †Divasibranchia Minichev & Starobogatov, 1975
        Count: [†g] †1o;1f;7g
           Order †Khairkhaniiformes Parkhaev, 2001
          Count: [†g] †1f;7g
             Family †Khairkhaniidae Missarzhevsky, 1989
            Count: [†g] †7g
               Genus †Ardrossania Runnegar, 1990
              Count: -