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] Podicipediformes Fürbringer, 1888 [monotypic]
         Family Podicipedidae Bonaparte, 1832 - grebes
           Genus Tachybaptus Reichenbach, 1853
             Tachybaptus novaehollandiae (Stephens, 1826) - Australasian grebe
               1 Tachybaptus novaehollandiae javanicus (Mayr, 1943)
               2 Tachybaptus novaehollandiae fumosus (Mayr, 1943)
               3 Tachybaptus novaehollandiae incola (Mayr, 1943)
               4 Tachybaptus novaehollandiae novaehollandiae (Stephens, 1826)
               5 Tachybaptus novaehollandiae leucosternos (Mayr, 1931)
               6 Tachybaptus novaehollandiae rennellianus (Mayr, 1943)