Chelicerata Heymons, 1901
Count: 2c;12o; †6o;2f;23g
   Scorpiones Koch, 1837 - scorpions
  Count: [g†g] 15f;5g; †43f;92g [27 Dec 2020]
     †Lobosternina Pocock, 1911
    Count: [†g] †11f;17g [27 Dec 2020]
       Superfamily †Isobuthoidea Petrunkevitch, 1913
      Count: [†g] †5f;10g [27 Dec 2020]
         Family †Isobuthidae Petrunkevitch, 1913
        Count: [†g] †4g [27 Dec 2020]
           Genus †Boreoscorpio Kjellesvig-Waering, 1986
          Count: -