Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Superphylum Articulata Cuvier see Supraphylum Articulata Cuvier
           Phylum Arthropoda Siebold, 1848 - arthropods
             Subphylum Chelicerata Heymons, 1901
               Class Arachnida Lamarck, 1801
                 Order Pseudoscorpiones De Geer, 1778
                   1 Suborder Chthoniinea see Superfamily Chthonioidea Daday, 1888
                   2 Suborder Neobisiinea see Superfamily Neobisioidea Chamberlin, 1930
                   3 Suborder Cheliferinea see Superfamily Cheliferoidea Risso, 1826