Neornithes Gadow, 1893 - living birds
   Palaeognathae - palaeognaths see Cohort Palaeognathae Pycraft, 1900
     ratites see Subcohort Ratitae Merrem, 1813
       Family Dromaiidae Huxley, 1868 - emus
         Genus Dromaius Vieillot, 1816
           1 Dromaius novaehollandiae (Latham, 1790) - emu
           2 ‡Dromaius ater Vieillot, 1817 - King Island emu
           3 ‡Dromaius baudinianus Parker, 1984 - Kangaroo Island emu