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 Tyrannidae Vigors, 1825 - tyrant-flycatchers
               Genus Zimmerius Traylor, 1977
                 1 Zimmerius vilissimus (Sclater & Salvin, 1859) - paltry tyrannulet
                 2 Zimmerius bolivianus (d'Orbigny, 1840) - Bolivian tyrannulet
                 3 Zimmerius cinereicapilla (Cabanis, 1873)
                 4 Zimmerius villarejoi Alvarez & Whitney, 2001 - Mishana tyrannulet
                 5 Zimmerius gracilipes (Sclater & Salvin, 1867) - slender-footed tyrannulet
                 6 Zimmerius chrysops (P.L. Sclater, 1859) - golden-faced tyrannulet
                 7 Zimmerius viridiflavus (Tschudi, 1844) - Peruvian tyrannulet