[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       [Order] Scorpiones Koch, 1837 - scorpions
         Suborder Neoscorpionina Thorell & Lindström, 1885
           Infraorder Orthosterni Pocock, 1911
             Parvorder Iurida Soleglad & Fet, 2003
               Superfamily Scorpionioidea Dunlop, Penney & Jekel, 2010, orth. inval. see Superfamily Scorpionoidea Latreille, 1802
                 1 Family Diplocentridae Karsch, 1880
                 2 Family Hemiscorpiidae Pocock, 1893
                 3 Family Heteroscorpionidae Kraepelin, 1905
                 4 Family Hormuridae Laurie, 1896
                 5 Family Scorpionidae Latreille, 1802
                 6 Family Rugodentidae Bastawade, Sureshan & Radhakrishnan, 2005
                 7 Family Urodacidae Pocock, 1893