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 Scorpionoidea Latreille, 1802
           Family Urodacidae Pocock, 1893
             1 Subfamily Urodacinae see Family Urodacidae Pocock, 1893
             2 Subfamily Heteroscorpioninae Birula, 1903 see Family Heteroscorpionidae Kraepelin, 1905