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 Phalacrocoracidae Reichenbach, 1850 - cormorants Subfamily †Graculavinae Fürbringer 1 Genus †Graculavus Marsh, 1872