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 Samooidea Sørensen, 1886
                 1 Family Biantidae Thorell, 1889
                 2 Family Escadabiidae Kury & Pérez-González, 2003
                 3 Family Kimulidae Pérez-González, Kury & Alonso-Zarazaga, 2007
                 4 Family Samoidae Sørensen, 1886
                 5 Family Stygnommatidae Roewer, 1923