Order Scorpiones Koch, 1837 - scorpions
   Suborder Neoscorpiones Thorell & Lindström, 1885 see Suborder Neoscorpionina Thorell & Lindström, 1885
     Infraorder Orthosterni Pocock, 1911
       Parvorder Iurida Soleglad & Fet, 2003
         Superfamily Chactoidea Pocock, 1893
           1 Family Chactidae Pocock, 1893
           2 Family Euscorpiidae Laurie, 1896
           3 Family Superstitioniidae Stahnke, 1940
           4 Family Vaejovidae Thorell, 1876