life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Arthropoda Siebold, 1848 - arthropods
     Class Arachnida Lamarck, 1801
       Dromopoda Shultz, 1990 see Subclass Dromopoda Shultz, 1990
         Order Opiliones Sundevall, 1833 - harvestmen
           Suborder Cyphophthalmi Simon, 1879 - mite harvestmen
             Superfamily Sironoidea Simon, 1879
               1 Family Sironidae Leach, 1816
               2 Family Stylocellidae Hansen & Sørensen, 1904