Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Chelicerata Heymons, 1901
       Class Arachnida Lamarck, 1801
         Order Opiliones Sundevall, 1833 - harvestmen
           Suborder Eupnoi Hansen & Sørensen, 1904 - daddy longlegs
             Superfamily Phalangioidea Latreille, 1802
               1 Family †Kustarachnidae Petrunkevitch, 1949
               2 Family Neopilionidae Lawrence, 1931
               3 Family Phalangiidae Latreille, 1802
               4 Family Sclerosomatidae Simon, 1879