[Avialae] Gauthier 1986 [Gauthier 1986] Aves Linnaeus 1758 [Gauthier 1986] see Class Aves Linnaeus, 1758 Pygostylia Chatterjee 1997 [Chiappe 2001] Ornithothoraces Chiappe 1995 [Chiappe 1995] †Enantiornithes Walker 1981 [Sereno 1998] see Infraclass Enantiornithes Walker, 1981 1.1 Genus †Neuquenornis Chiappe & Calvo, 1994 1.2 Genus †Gobipteryx Elżanowski, 1974 1.3 Genus †Sinornis Sereno & Rao, 1992 1.4 Genus †Concornis Sanz & Buscalioni, 1992 1.5 Genus †Eoalulavis Sanz et al., 1996 2.1 Genus †Noguerornis Lacasa-Ruiz, 1989 2.2 Genus †Iberomesornis Sanz & Bonaparte, 1992