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
             1 Genus Sula Brisson, 1760
             2 Genus †Microsula Wetmore, 1938
             3 Genus Morus Vieillot, 1816
             4 Genus †Palaeosula Howard
             5 Genus †Miosula L. Miller