Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Galliformes Temminck, 1820 - fowl
           Family Cracidae Vigors, 1825 - chachalacas, curassows, guans
             Genus Crax Linnaeus, 1758
               Crax daubentoni Gray, 1867 - yellow-knobbed curassow