[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       Pantetrapulmonata Shultz, 2007
         [Order] Araneida Clerck, 1757 - spiders
           [Suborder] Araneae Clerck, 1757 - tailless spiders
             [Infraorder] Opisthothelae Pocock, 1892 - unsegmented spiders
               Araneomorphae Smith, 1902
                 CY Spigot Clade Wheeler et al., 2017
                   Entelegynae Simon, 1893
                     Superfamily Araneoidea Clerck, 1757
                       Family Mimetidae Simon, 1881
                         Genus Ero Koch, 1836
                           1 Subgenus †Ero (Succinero) Wunderlich, 2004
                           2 Subgenus †Ero (Paleoero) Dunlop, Penney & Jekel, 2013, orth. inval. see Subgenus Palaeoero Wunderlich, 2004