Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Chelicerata Heymons, 1901
       Class Arachnida Lamarck, 1801
         Order Palpigradi Thorell, 1888 - palpigrades
           Superfamily Eukoenenioidea Petrunkevitch, 1955
             1 Family Eukoeneniidae Petrunkevitch, 1955
             2 Family Prokoeneniidae Condé, 1996