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 Phasianidae Vigors, 1825 - turkeys, grouse, pheasants, partridges
             Subfamily Odontophorinae Gould, 1844 - American quail
               Genus Cyrtonyx Gould, 1844
                 1 Cyrtonyx montezumae (Vigors, 1830) - Montezuma quail
                 2 Cyrtonyx sallei see Cyrtonyx montezumae sallei Verreaux, 1859
                 3 Cyrtonyx ocellatus (Gould, 1837) - ocellated quail