Neornithes Gadow, 1893 - living birds Palaeognathae - palaeognaths see Cohort Palaeognathae Pycraft, 1900 ratites see Subcohort Ratitae Merrem, 1813 1 Family Struthionidae Batsch, 1788 - ostriches 2 Family Rheidae Bonaparte, 1849 - rheas 3 Family Casuariidae Kaup, 1847 - cassowaries 4 Family Dromaiidae Huxley, 1868 - emus 5 Family Apterygidae Gray, 1840 - kiwis