Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Sphenisciformes Sharpe, 1891
         Family Spheniscidae Bonaparte, 1831 - penguins
           1 Genus Aptenodytes Miller, 1778
           2 Genus Pygoscelis Wagler, 1832
           3 Genus Eudyptes Vieillot, 1816
           4 Genus Megadyptes Milne-Edwards, 1880 [monotypic]
           5 Genus Eudyptula Bonaparte, 1856 [monotypic]
           6 Genus Spheniscus Brisson, 1760