Chelicerata Heymons, 1901
Opiliones Sundevall, 1833 - harvestmen
Phalangida Bristowe, 1949
Suborder Eupnoi Hansen & Sørensen, 1904 - daddy longlegs
Superfamily Phalangioidea Latreille, 1802
Family Sclerosomatidae Simon, 1879
1 Genus †Amauropilio Mello-Leitão, 1937
2 Genus Eumesosoma Cokendolpher, 1980
3 Genus Leiobunum Koch, 1839
4 Genus †Mesobunus Huang, Selden & Dunlop, 2009