[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
                 CY Spigot Clade Wheeler et al., 2017
                   Entelegynae Simon, 1893
                     Superfamily Araneoidea Clerck, 1757
                       Family Theridiosomatidae Simon, 1881
                         1 Genus Baalzebub Coddington, 1986
                         2 Genus †Eocoddingtonia Selden, 2010
                         3 Genus †Eoepeirotypus Wunderlich, 2004
                         4 Genus †Eotheridiosoma Wunderlich, 2004
                         5 Genus †Palaeoepeirotypus Wunderlich, 1988
                         6 Genus †Spinitheridiosoma Wunderlich, 2004
                         7 Genus Theridiosoma Pickard-Cambridge, 1879
                         8 Genus †Umerosoma Wunderlich, 2004