Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758 Order Falconiformes Sharpe, 1874 Family Sagittariidae Finsch & Hartlaub, 1870 - secretarybird