After Wikipedia, 2011, Olson, 1985, and Feduccia, 1980, 1996
<==o †Diatrymiformes Shufeldt, 1913 [non Matthew & Granger 1917?] [Neornithes incertae sedis] `--o †Gastornithidae Fürbringer 1888 [Diatrymatidae Shufeldt, 1913] (kauhukurjet, diatrymit) |-- †Zhongyuanus xichuanensis Hou, 1980 `--o †Gastornis Hébert, 1855 [Diatryma Cope 1876; Barornis Marsh, 1894; Omorhamphus Sinclair, 1928] |-- †G. parisiensis Hébert, 1855 [G. edwardsii Lemoine, 1878; G. klaasseni Newton, 1885] [type] |-- †G. ajax (Shufeldt 1913) [Diatryma ajax Shufeldt 1913] |-- †G. giganteus (Cope, 1876) [Diatryma gigantea Cope, 1876; Barornis regens Marsh, 1894; Omorhamphus storchii Sinclair, 1928; Omorhamphus storchi Wetmore, 1931(unjust. emend.)] |?- †G. geiselensis [Diatryma geiselensis] |-- †G. sarasini Schaub, 1929 `-- †G. russeli Martin, 1992
Reference(s):
- Anonymous, 2011: Gastornis [visited: 2011-12-11]
–iNet: Wikipedia - The Free Encyclopedia: http://en.wikipedia.org/wiki/Gastornis [last updated: 2011-10-26] - Feduccia, A., 1980: The Age of Birds.
–Harvard University Press, Cambridge, Massachusetts & London, England, 1980, IX-196 - Feduccia, A., 1996: The Origin and Evolution of Birds.
–Yale University Press, New Haven, 1996, x-420 - Olson, S. L., 1985: The fossil record of birds. 79-239.
in Farner, D., King, J. & Parkes, K. (eds.), 1985: Avian Biology. vol VIII.
–Academic Press, New York, 1985