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] Trogoniformes Wetmore & Miller, 1926 - trogons
         Family Trogonidae Lesson, 1828 - trogons
           Genus Pharomachrus De La Llave, 1832
             1 Pharomachrus pavoninus (Spix, 1824) - pavonine quetzal
             2 Pharomachrus auriceps (Gould, 1842) - golden-headed quetzal
             3 Pharomachrus fulgidus (Gould, 1838) - white-tipped quetzal
             4 Pharomachrus mocinno de la Llave, 1832 - resplendent quetzal
             5 Pharomachrus antisianus (d'Orbigny, 1837) - crested quetzal