Chelicerata Heymons, 1901
   Scorpiones Koch, 1837 - scorpions
     †Holosternina Kjellesvig-Waering, 1986
       Superfamily †Mesophonoidea Wills, 1910
         Family †Centromachidae Petrunkevitch, 1953
           1 Genus †Anthracochaerilus Kjellesvig-Waering, 1986
           2 Genus †Centromachus Thorell & Lindström, 1885
           3 Genus †Opsieobuthus Kjellesvig-Waering, 1986
           4 Genus †Phoxiscorpio Kjellesvig-Waering, 1986
           5 Genus †Pulmonoscorpius Jeram, 1994