Chelicerata Heymons, 1901
   Opiliones Sundevall, 1833 - harvestmen
     Phalangida Bristowe, 1949
       Suborder Laniatores Thorell, 1876 - armored harvestmen
         Infraorder Grassatores Kury, 2002
           Superfamily Gonyleptoidea Sundevall, 1833
             1 Family Agoristenidae Šilhavý, 1973
             2 Family Cosmetidae Koch, 1839
             3 Family Cranaidae Roewer, 1913
             4 Family Gonyleptidae Sundevall, 1833
             5 Family Manaosbiidae Roewer, 1943
             6 Family Stygnidae Simon, 1879