[Subphylum] [Chelicerata] Heymons, 1901
   [Order] Araneae Clerck, 1757 - spiders see Suborder Araneae Clerck, 1757
     Suborder Opisthothelae Pocock, 1892 - modern spiders see Infraorder Opisthothelae Pocock, 1892
       Infraorder Araneomorphae Smith, 1902 see [unranked] Araneomorphae Smith, 1902
         Entelegynae Simon, 1893
           Tibial Apophysis [TA] clade Wunderlich, 2021
             1 Family Titanoecidae Lehtinen, 1967
             2.1 Family Phyxelididae Lehtinen, 1967
             2.2 Retrolateral Tibial Apophysis (RTA) clade