[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       [Order] Opiliones Sundevall, 1833 - harvestmen
         Phalangida Bristowe, 1949
           Suborder Dyspnoi Hansen & Sørensen, 1904 - ornate harvestmen
             Superfamily Ischyropsalidoidea Simon, 1879
               1 ?Genus †Piankhi Dunlop, Bartel & Mitov, 2012
               2 Family Ceratolasmatidae Shear, 1986 see Subfamily Ceratolasmatinae Shear, 1986
               3 Family Ischyropsalididae Simon, 1879, nom. praeval.
               4 Family Sabaconidae Dresco, 1970 [monotypic]