Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Passeriformes Linnaeus, 1758
         suboscines see Suborder Suboscines
           Tyranni see Suborder Tyranni
             Family Furnariidae Gray, 1840 - ovenbirds
               Genus Xenops Illiger, 1811
                 1 Xenops milleri (Chapman, 1914) - rufous-tailed xenops
                 2 Xenops tenuirostris Pelzeln, 1859 - slender-billed xenops
                 3 Xenops minutus (Sparrman, 1788) - plain xenops
                 4 Xenops rutilans Temminck, 1821 - streaked xenops