[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
                 Synspermiata Michalik & Ramírez, 2014
                   Family Trogloraptoridae Griswold, Audisio & Ledford, 2012
                   Family †Burmorsolidae Wunderlich, 2015 [monotypic]
                   Family Caponiidae Simon, 1890 [monotypic]
                   Superfamily Dysderoidea Koch, 1837
                   Superfamily Scytodoidea Blackwall, 1864
                   Lost Trachea Clade
                     1 Family Tetrablemmidae Pickard-Cambridge, 1873, orth. praeval.
                     2 Family Plectreuridae Simon, 1893
                     3 Family Diguetidae Pickard-Cambridge, 1899
                     4 Family Pholcidae Koch, 1850