[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       [Order] Scorpiones Koch, 1837 - scorpions
         [Suborder] †Lobosternina Pocock, 1911
           Superfamily †Isobuthoidea Petrunkevitch, 1913
             Family †Isobuthidae Petrunkevitch, 1913
               1 Genus †Boreoscorpio Kjellesvig-Waering, 1986
               2 Genus †Bromsgroviscorpio Kjellesvig-Waering, 1986
               3 Genus †Feistmantelia Fritsch, 1904
               4 Genus †Isobuthus Fritsch, 1904