Order Scorpiones Koch, 1837 - scorpions
Status: extant
   Suborder Neoscorpiones Thorell & Lindström, 1885 see Suborder Neoscorpionina Thorell & Lindström, 1885
  Status: extant
     Infraorder Orthosterni Pocock, 1911
    Status: extant
       Parvorder Iurida Soleglad & Fet, 2003
      Status: extant
         Superfamily Scorpionoidea Latreille, 1802
        Status: extant
           1 Family Scorpionidae Latreille, 1802
          Status: extant
           2 Family Urodacidae Pocock, 1893
          Status: extant
           3 Family Liochelidae Fet & Bechly, 2001 (1879) see Family Hormuridae Laurie, 1896
          Status: extant
           4 Family Bothriuridae Simon, 1880
          Status: extant