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 Harpactes Swainson, 1833
             01 Harpactes reinwardtii (Temminck, 1822) - blue-tailed trogon
             02 Harpactes fasciatus (Pennant, 1769) - Malabar trogon
             03 Harpactes kasumba (Raffles, 1822) - red-naped trogon
             04 Harpactes diardii (Temminck, 1832) - Diard's trogon
             05 Harpactes ardens (Temminck, 1826) - Philippine trogon
             06 Harpactes whiteheadi Sharpe, 1888 - Whitehead's trogon
             07 Harpactes orrhophaeus (Cabanis & Heine, 1863) - cinnamon-rumped trogon
             08 Harpactes duvaucelii (Temminck, 1824) - scarlet-rumped trogon
             09 Harpactes oreskios (Temminck, 1823) - orange-breasted trogon
             10 Harpactes erythrocephalus (Gould, 1834) - red-headed trogon
             11 Harpactes wardi (Kinnear, 1927) - Ward's trogon