[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 Avicularoidea Worley, 1932, orth. inval. see Superfamily Avicularioidea Simon, 1874
                   Family Ctenizidae Thorell, 1887 - trap-door spiders
                     1 Genus †Baltocteniza Eskov & Zonstein, 2000
                     2 Genus †Electrocteniza Eskov & Zonstein, 2000
                     3 Genus †Parvocteniza Wunderlich, 2020
                     4 Genus Ummidia Thorell, 1875