[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] Mesothelae Pocock, 1892 - segmented spiders
               1 Family †Arthrolycosidae Harger, 1874
               2 Family †Palaeothelidae Selden, 2021 [monotypic]
               3 Family †Arthromygalidae Petrunkevitch, 1923
               4 Genus †Eolycosa Kušta, 1886, incertae sedis
               5 Family †Eomesothelidae Wunderlich, 2019
               6 Family †Burmathelidae Wunderlich, 2017 [monotypic]
               7 Family †Cretaceothelidae Wunderlich, 2017 [monotypic]
               8 Family Liphistiidae Thorell, 1869