[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       Pantetrapulmonata Shultz, 2007
         [Order] †Uraraneida Selden & Shear, 2008
           1 Genus †Attercopus Selden & Shear, 1991
           2 Family †Permarachnidae Eskov & Selden, 2005 [monotypic]