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 Ortalis Merrem, 1786
               Ortalis guttata (Spix, 1825) - speckled chachalaca
                 1 Ortalis guttata araucuan (Spix, 1825) - Brazilian chachalaca
                 2 Ortalis guttata squamata Lesson, 1829 - scaled chachalaca
                 3 Ortalis guttata colombiana Hellmayr, 1906 see Ortalis guttata columbiana Hellmayr, 1906
                 4 Ortalis guttata guttataᵀ (Spix, 1825) - speckled chachalaca
                 5 Ortalis guttata subaffinis Todd, 1932