[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
             1 Family †Eobuthidae Kjellesvig-Waering, 1986 [monotypic]
             2 Family †Eoscorpiidae Scudder, 1884
             3 Family †Isobuthidae Petrunkevitch, 1913
             4 Family †Kronoscorpionidae Kjellesvig-Waering, 1986 [monotypic]
             5 Family †Pareobuthidae Kjellesvig-Waering, 1986 [monotypic]