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 Chamaepetes Wagler, 1832
               1 Chamaepetes unicolor Salvin, 1867 - black guan
               2 Chamaepetes goudotii (Lesson, 1828) - sickle-winged guan