Order Scorpiones Koch, 1837 - scorpions
   Suborder Neoscorpionina Thorell & Lindström, 1885
     Infraorder Orthosterni Pocock, 1911
       Parvorder Pseudochactida Soleglad & Fet, 2003 [monotypic] see Parvorder Buthida Soleglad & Fet, 2003
         Superfamily Pseudochactoidea Gromov, 1998 [monotypic]
           Family Pseudochactidae Gromov, 1998 [monotypic]
             Genus Pseudochactas Gromov, 1998