Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893 Order Struthioniformes Latham, 1790 Suborder Casuarii see Order Casuariiformes Sclater, 1880 1 Family Casuariidae Kaup, 1847 - cassowaries 2 Family Dromaiidae Huxley, 1868 - emus