Class Scorpionida Latreille, 1810 - scorpions
   Order Scorpiones Koch, 1837 - scorpions
     Suborder Neoscorpionina Thorell & Lindström, 1885
       Infraorder Orthosterni Pocock, 1911
         Superfamily Chactoidea Pocock, 1893
           Family Chactidae Pocock, 1893
             1 Genus Nullibrotheas Williams, 1974
             2 Genus Chactas Gervais, 1844
             3 Genus Teuthraustes Simon, 1878
             4 Genus Vachoniochactas González-Sponga, 1978
             5 Genus Chactopsis Kraepelin, 1912
             6 Genus Brotheas Koch, 1837
             7 Genus Broteochactas Pocock, 1893