Chelicerata Heymons, 1901
   Opiliones Sundevall, 1833 - harvestmen
     Phalangida Bristowe, 1949
       Suborder Eupnoi Hansen & Sørensen, 1904 - daddy longlegs
         1 [plesion] Genus †Brigantibunum Dunlop & Anderson, 2005
         2 [plesion] Genus †Kustarachne Scudder, 1890
         3 [plesion] Genus †Macrogyion Garwood, Dunlop, Giribet & Sutton, 2011
         4 Superfamily Caddoidea Banks, 1893 [monotypic]
         5 Superfamily Phalangioidea Latreille, 1802
         6 Genus †Daohugopilio Huang, Selden & Dunlop, 2009