Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Chelicerata Heymons, 1901
       Class Arachnida Lamarck, 1801
         Order Opiliones Sundevall, 1833 - harvestmen
           Suborder Laniatores Thorell, 1876 - armored harvestmen
             Infraorder Grassatores Kury, 2002
               Superfamily Zalmoxoidea Sørensen, 1886
                 1 Family Fissiphalliidae Martens, 1988
                 2 Family Guasiniidae González-Sponga, 1997
                 3 Family Icaleptidae Kury & Pérez-González, 2002
                 4 Family Zalmoxidae Sørensen, 1886