Phylum [Vertebrata] Lamarck, 1801 see Infraphylum Vertebrata Lamarck, 1801 Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758 Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893 Order Struthiornithiformes Genus †Aepyornis Geoffroy, 1850 Genus †Dinornis Owen, 1843 Genus †Emeus Reichenbach, [1852]