[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       Pantetrapulmonata Shultz, 2007
         [Order] Araneida Clerck, 1757 - spiders
           1 [Suborder] †Chimerarachnida Wunderlich, 2018 [monotypic] - tailed spiders
           2 [Suborder] Araneae Clerck, 1757 - tailless spiders