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
               Suborder Opisthothelae Pocock, 1892 - modern spiders
                 Araneomorphae Smith, 1902
                   Neocribellatae
                     Araneoclada
                       Haplogynae
                         1 Family Filistatidae Ausserer, 1867
                         2.1.1 Family Caponiidae Simon, 1890
                         2.1.2.1 Family Tetrablemmidae O. P.-Cambridge, 1873
                         2.1.2.2.1 Family Segestriidae Simon, 1893
                         2.1.2.2.2.1 Family Dysderidae C.L. 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 C.L. Koch, 1850
                         2.2.1.2.1 Family Diguetidae F.O. P.-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) Lehtinen, 1986
                         2.2.2.2.2.2.1 Family Scytodidae Blackwall, 1864 - spitting spiders
                         2.2.2.2.2.2.2 Family Periegopidae Simon, 1893