Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Galloanserae Sibley, Ahlquist & Monroe Jr., 1988 see Subcohort Galloanserae Sibley, Ahlquist & Monroe Jr., 1988
       [Order] Galliformes Temminck, 1820 - fowl
         Family Cracidae Vigors, 1825 - chachalacas, curassows, guans
           Subfamily Penelopinae Bonaparte, 1831 - guans
             Genus Penelope Merrem, 1786
               01 Penelope argyrotis (Bonaparte, 1856) - band-tailed guan
               02 Penelope barbata Chapman, 1921 - bearded guan
               03 Penelope ortoni Salvin, 1874 - Baudo guan
               04 Penelope montagnii (Bonaparte, 1856) - Andean guan
               05 Penelope marail (Statius Müller, 1776) - Marail guan
               06 Penelope superciliaris Temminck, 1815 - rusty-margined guan
               07 Penelope dabbenei Hellmayr & Conover, 1942 - red-faced guan
               08 Penelope purpurascens Wagler, 1830 - crested guan
               09 Penelope perspicax Bangs, 1911 - Cauca guan
               10 Penelope albipennis Taczanowski, 1878 - white-winged guan
               11 Penelope jacquacu Spix, 1825 - Spix's guan
               12 Penelope obscura Temminck, 1815 - dusky-legged guan
               13 Penelope pileata Wagler, 1830 - white-crested guan
               14 Penelope ochrogaster Pelzeln, 1870 - chestnut-bellied guan
               15 Penelope jacucaca Spix, 1825 - white-browed guan