Subclass Avialae Gauthier, 1986
see Clade Avialae Gauthier 1986
Infraclass Aves Linnaeus, 1758
see Subclass Aves Linnaeus, 1758
Parvclass Neornithes Gadow, 1893
see Subclass Neornithes Gadow, 1893
Cohort Neognathae Pycraft, 1900
Subcohort Galloanserae Sibley, Ahlquist & Monroe Jr., 1988
Superorder Galloanserimorphae Sibley, Ahlquist & Monroe Jr., 1988
Order Anseriformes Wagler, 1831 - waterfowl and screamers
Suborder Anseres Linnaeus, 1758 - waterfowl
Superfamily Anatoidea Vigors, 1825
1 Family †Presbyornithidae Wetmore, 1926
2 Family Anatidae Vigors, 1825 - ducks, geese, swans