Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
   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
       5 Genus Eudyptula Bonaparte, 1856
       6 Genus Spheniscus Brisson, 1760