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 †Archaeobranchia Parkhaev, 2001
        Count: [†g] †2o;8f;67g
           Order †Pelagielliformes Runnegar & Pojeta, 1985
          Count: [†g] †2f;5g
             Family †Aldanellidae Linsley & Kier, 1984
            Count: [†g] †2g
               Genus †Aldanella Vostokova, 1962
              Count: -