Class Aves Linnaeus, 1758 - birds
see Subclass Aves Linnaeus, 1758
Subclass Ornithurae Haeckel, 1866
see Clade Ornithurae Haeckel 1866 [Gauthier 1986] {Chiappe 1991}
Infraclass Carinatae Merrem, 1813
see Clade Carinatae Merrem 1813 [Gauthier & de Queiroz 2001]
Order Galliformes Temminck, 1820 - fowl
Family Cracidae Vigors, 1825 - chachalacas, curassows, guans
Subfamily Cracinae Vigors, 1825 - curassows
Genus †Paracrax Brodkorb, 1964