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
               01 Crax tomentosa Spix, 1825 see Mitu tomentosum (Spix, 1825)
               02 Crax salvini (Reinhardt, 1879) see Mitu salvini Reinhardt, 1879
               03 Crax mitu Linnaeus, 1766 see Mitu mitu (Linnaeus, 1766)
               04 Crax pauxi Linnaeus, 1766 see Pauxi pauxi (Linnaeus, 1766)
               05 Crax unicornis (Bond & Meyer de Schauensee, 1939) see Pauxi unicornis Bond & Meyer de Schauensee, 1939
               06 Crax rubra Linnaeus, 1758 - great curassow
               07 Crax alberti Fraser, 1852 - blue-billed curassow
               08 Crax daubentoni Gray, 1867 - yellow-knobbed curassow
               09 Crax alector Linnaeus, 1766 - black curassow
               10 Crax globulosa Spix, 1825 - wattled curassow
               11 Crax fasciolata Spix, 1825 - bare-faced curassow
               12 Crax blumenbachii Spix, 1825 - red-billed curassow