Order Scorpiones Koch, 1837 - scorpions
   Suborder Neoscorpionina Thorell & Lindström, 1885
     Infraorder Orthosterni Pocock, 1911
       Parvorder Iurida Soleglad & Fet, 2003
         Superfamily Scorpionoidea Latreille, 1802
           1 Family Diplocentridae Karsch, 1880
           2 Family Hemiscorpiidae Pocock, 1893
           3 Family Hormuridae Laurie, 1896 [monophyletic?]
           4 Family Scorpionidae Latreille, 1802 [monophyletic?]
           5 Family Urodacidae Pocock, 1893