Chelicerata Heymons, 1901
Opiliones Sundevall, 1833 - harvestmen
Phalangida Bristowe, 1949
Suborder Laniatores Thorell, 1876 - armored harvestmen
Infraorder Grassatores Kury, 2002
Superfamily Assamioidea Sørensen, 1884
Family Pyramidopiidae Dunlop, Penney & Jekel, 2012, orth. inval.
see Family Pyramidopidae Sharma, Prieto & Giribet, 2011