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
         oscines see Suborder Oscines
           Passerida - passeridans see Parvorder Passerida (C. Linnaeus, 1758) Sibley et al., 1988
             Muscicapoidea
               Family Troglodytidae Swainson, 1832 - wrens
                 Genus Cistothorus Cabanis, 1851
                   1 Cistothorus platensis (Latham, 1790) - sedge wren
                   2 Cistothorus meridae Hellmayr, 1907
                   3 Cistothorus apolinari Chapman, 1914
                   4 Cistothorus palustris (A. Wilson, 1810) - marsh wren