Reptilia - Neornithes - Pelagornithidae

Full reference: E. D. Cope. 1895. On Cyphornis, an extinct genus of birds. Journal of the Academy of Natural Sciences of Philadelphia 9:449-452

Parent taxon: Cyphornithidae according to A. Wemore 1928

Sister taxa: Dasornis, Gigantornis, Lutetodontopteryx, Macrodontopteryx, Pelagornis, Caspiodontornis, Tympanonesiotes

Subtaxa: Cyphornis magnus

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Ecology: ground dwelling carnivore