 Natura - nature | | Mundus Plinius - physical world | | Naturalia - natural bodies | | Biota | | Domain Eukaryota Chatton, 1925 - eukaryotes | | Unikonta | | Opisthokonta Cavalier-Smith, 1987 | | Holozoa | | Kingdom Animalia C. Linnaeus, 1758 - animals | | Epitheliozoa Ax, 1996 | | Eumetazoa Bütschli, 1910 - eumetazoans | | Bilateria Hatschek, 1888 - bilaterians | | Eubilateria Ax, 1987 | | Deuterostomia Grobben, 1908 - deuterostomes | | Phylum Chordata Bateson, 1885 - chordates | | Subphylum Vertebrata Cuvier, 1812 - vertebrates | | Infraphylum Gnathostomata auct. - jawed vertebrates | | Superclass Tetrapoda Goodrich, 1930 - tetrapods | | Reptiliomorpha | | Batrachosauria | | Amniota | | Reptilia | | Eureptilia | | Romeriida | | Diapsida Osborn, 1903 | | Eosuchia Broom, 1914 | | Neodiapsida Gauthier, 1984 | | Sauria | | Archosauromorpha | | Archosauria | | Avesuchia | | Avemetatarsalia Benton, 1999 | | Ornithodira | | Dinosauromorpha | | Dinosauriformes | | Dinosauria Owen, 1842b | | Saurischia Seeley, 1887a | | Eusaurischia Padian et al., 1999 | | Theropoda Marsh, 1881a | | Tetanurae Gauthier, 1986 | | Avetheropoda Paul, 1988a | | Coelurosauria von Huene, 1914a | | Tyrannoraptora | | Maniraptoriformes T. Holtz, 1996a | | Maniraptora Gauthier, 1986 | | Paraves Sereno, 1997 | | Avialae Gauthier, 1986 | | Class Aves C. Linnaeus, 1758 - birds | | Pygostylia | | Ornithothoraces Chiappe, 1995 | | Ornithuromorpha Chiappe, 2002 | | Ornithurae Haeckel, 1866 | | Order †Hesperornithiformes (Fürbringer, 1888) Sharpe, 1899 |  Family †Baptornithidae American Ornithologists' Union |  Genus †Baptornis™
Marsh, 1877 |
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