life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Arthropoda Siebold, 1848 - arthropods
     Class Arachnida Lamarck, 1801
       Micrura Hansen & Sørensen, 1904
         Megoperculata Börner, 1902
           Tetrapulmonata Shultz, 1990
             Order Araneae Clerck, 1757 - spiders see Suborder Araneae Clerck, 1757
               Suborder Opisthothelae Pocock, 1892 - modern spiders see Infraorder Opisthothelae Pocock, 1892
                 Araneomorphae Smith, 1902 see [unranked] Araneomorphae Smith, 1902
                   Neocribellatae Caporiacco
                     Araneoclada
                       Haplogynae
                         1 Family Filistatidae Ausserer, 1867 - cribellate open tube dwellers
                         2.1.1 Family Caponiidae Simon, 1890
                         2.1.2.1 Family Tetrablemmidae Pickard-Cambridge, 1873, orth. praeval.
                         2.1.2.2.1 Family Segestriidae Simon, 1893
                         2.1.2.2.2.1 Family Dysderidae Koch, 1837
                         2.1.2.2.2.2.1 Family Orsolobidae Cooke, 1965
                         2.1.2.2.2.2.2 Family Oonopidae Simon, 1890
                         2.2.1.1 Family Pholcidae Koch, 1850
                         2.2.1.2.1 Family Diguetidae Pickard-Cambridge, 1899
                         2.2.1.2.2 Family Plectreuridae Simon, 1893
                         2.2.2.1.1 Family Ochyroceratidae Fage, 1912
                         2.2.2.1.2.1 Family Leptonetidae Simon, 1890
                         2.2.2.1.2.2 Family Telemidae Fage, 1913
                         2.2.2.2.1 Family Sicariidae Keyserling, 1880
                         2.2.2.2.2.1 Family Drymusidae Simon, 1893
                         2.2.2.2.2.2.1 Family Scytodidae Blackwall, 1864 - spitting spiders
                         2.2.2.2.2.2.2 Family Periegopidae Simon, 1893