Chelicerata Heymons, 1901
Count: 2c;12o; †6o;2f;23g
   Scorpiones Koch, 1837 - scorpions
  Count: [g†g] 15f;5g; †43f;92g [27 Dec 2020]
     Orthosternina Pocock, 1911 see Infraorder Orthosterni Pocock, 1911
    Count: [g†g] 15f;5g; †8f;30g [27 Dec 2020]
       Superfamily Buthoidea Koch, 1837
      Count: [g†g] 2f;4g; †6f;17g [27 Dec 2020]
         Family †Palaeoburmesebuthidae Lourenço, 2015
        Count: [†g] †3g [27 Dec 2020]
           1 Genus †Betaburmesebuthus Lourenço & Beigel, 2015
          Count: -
           2 Genus †Palaeoburmesebuthus Lourenço, 2002
          Count: -
           3 Genus †Spinoburmesebuthus Lourenço, 2017
          Count: -