Chelicerata Heymons, 1901 Opiliones Sundevall, 1833 - harvestmen Phalangida Bristowe, 1949 Suborder Laniatores Thorell, 1876 - armored harvestmen Infraorder Grassatores Kury, 2002 Superfamily Samoidea Gerlach, 2010, orth. inval. see Superfamily Samooidea Sørensen, 1886 Family Biantidae Thorell, 1889