[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
               Mygalomorphae Pocock, 1892
                 Superfamily Atypoidea Thorell, 1870
                   Family Antrodiaetidae Gertsch, 1940 [monotypic]
                     1 Genus †Cretacattyma Eskov & Zonshtein, 1990