life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Arthropoda Siebold, 1848 - arthropods
     Arachnida Lamarck, 1801
       Micrura Hansen & Sørensen, 1904
         Megoperculata Börner, 1902
           Tetrapulmonata Shultz, 1990
             Araneae Clerck, 1757 - spiders
               Opisthothelae Pocock, 1892 - modern spiders
                 Araneomorphae Smith, 1902
                   Neocribellatae
                     Araneoclada
                       Entelegynae
                         Palpimanoidea Forster & Platnick, 1984
                           1.1 Mimetidae Simon, 1881
                           1.2 ?Malkaridae Davies, 1980
                           2.1.1 Huttoniidae Simon, 1893
                           2.1.2.1 Palpimanidae Thorell, 1870, nom. protect.
                           2.1.2.2 Stenochilidae Thorell, 1873
                           2.2.1 Micropholcommatidae Hickman, 1944
                           2.2.2.1 Holarchaeidae Forster & Platnick, 1984
                           2.2.2.2.1 Pararchaeidae Forster & Platnick, 1984
                           2.2.2.2.2.1 Archaeidae C.L. Koch & Berendt, 1854 - assassin spiders
                           2.2.2.2.2.2 Mecysmaucheniidae Simon, 1895