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 Pelecaniformes Sharpe, 1891
Suborder Sulae Sharpe
see Parvorder Sulida (Reichenbach, 1849) Sibley et al., 1988
Family Sulidae Reichenbach, 1849 - gannets, boobies
Genus Morus Vieillot, 1816