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 Ardeiformes Wagler, 1830
Suborder Plataleae A. Newton
see Suborder Ciconiae Bonaparte, 1854
Family Plataleidae Bonaparte, 1838
Subfamily Threskiornithinae Richmond, 1917
see Family Threskiornithidae Richmond, 1917
Genus †Protibis Ameghino, 1891