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
                       Entelegynae
                         canoe tapetum clade
                           Orbiculariae Walckenaer, 1802
                             Superfamily Araneoidea Clerck, 1757
                               derived araneoids
                                 reduced piriform clade
                                   symphytognathoids
                                     Family Theridiosomatidae Simon, 1881