Subclass Neornithes Gadow, 1893
see Clade Neornithes Gadow, 1893
Order Podicipediformes Fürbringer, 1888
Family Podicipedidae Bonaparte, 1832 - grebes
1 Genus Rollandia Bonaparte, 1856
2 Genus Tachybaptus Reichenbach, 1853
3 Genus Podilymbus Lesson, 1831
4 Genus Poliocephalus Selby, 1840
5 Genus Podiceps Latham, 1787
6 Genus Aechmophorus Coues, 1862