Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   Subclass Ornithurae Haeckel, 1866 see Clade Ornithurae Haeckel 1866 [Gauthier 1986] {Chiappe 1991}
     Infraclass Ratitae (Merrem, 1813) P. Brodkorb, 1963 see Parvclass Ratitae (Merrem, 1813)
       Order Casuariiformes Sclater, 1880
         Family †Dromornithidae Vigors, 1825 - mihirungs
           1 Genus †Dromornis Owen, 1873
           2 Genus †Genyornis Stirling & Zietz