Reptilia - Ornithurae

Full reference: O. C. Marsh. 1873. On a new sub-class of fossil birds (Odontornithes). American Journal of Science and Arts 5(2):161-162

Parent taxon: Ornithurae according to J. A. Clarke 2004

Sister taxa: Ambiortus, Apsaravis, Archaeovolans, Carinatae, Chaoyangia, Chaoyangiformes, Chaoyangornithiformes, Gansus, Gobipterygiformes, Guildavis, Hesperornis, Iaceornis, Jianchangornis, Liaoningornithiformes, Odontoholcae, Odontoholomorphae, Otogornis, Qinornis, Schizooura, Songlingornithidae, Yanornithiformes, Yixianornithiformes

Subtaxa: Apatornis celer, Apatornis retustus

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Ecology: ground dwelling carnivore