Chelicerata Heymons, 1901 Opiliones Sundevall, 1833 - harvestmen Phalangida Bristowe, 1949 Suborder Dyspnoi Hansen & Sørensen, 1904 - ornate harvestmen Superfamily Troguloidea Sundevall, 1833 Family †Nemastomoididae Petrunkevitch, 1955 [monotypic] Genus †Nemastomoides Thévenin, 1901