[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       Pantetrapulmonata Shultz, 2007
         [Order] Araneida Clerck, 1757 - spiders
           [Suborder] Araneae Clerck, 1757 - tailless spiders
             [Infraorder] Opisthothelae Pocock, 1892 - unsegmented spiders
               Araneomorphae Smith, 1902
                 Synspermiata Michalik & Ramírez, 2014
                   Superfamily Dysderoidea Koch, 1837
                     Family Oonopidae Simon, 1890
                       1 Genus †Burmorchestina Wunderlich, 2008
                       2 Genus †Canadaorchestina Wunderlich, 2008
                       3 Genus †Fossilopaea Wunderlich, 1988
                       4 Genus Heteroonops Dalmas, 1916
                       5 Genus Opopaea Simon, 1892
                       6 Genus Orchestina Simon, 1882
                       7 Genus Stenoonops Simon, 1892