After Hamilton, 1978, Tchernov, Ginsburg, Tassy & Goldsmith, 1987, McKenna & Bell, 1997, Morales, Soria & Pickford, 1999, Pickford, Attia & Abd El Ghany, 2001
<==o †Climacoceratidae Hamilton, 1978 |?- †Canthumeryx sirtensis Hamilton, 1973a [Zarafa zalteni Hamilton, 1973a] [Cathymerycidae] |?- †Prolibytherium magnieri Arambourg, 1961 `==o †Sperrgebietomeryginae Morales, Soria & Pickford, 1999 |-- †Sperrgebietomeryx wardi Morales, Soria & Pickford, 1999 [cf. Strogulognathus sansaniensis (Stromer, 1926)] `--+--o †Propalaeoryx Stromer, 1926 | |-- †P. nyanzae Whitworth, 1958 | `-- †P. austroafricanus Stromer, 1926 `--o †Climacoceratinae Hamilton, 1978 |-- †Orangemeryx hendey Morales, Soria & Pickford, 1999 `--+-- †Nyanzameryx pickfordi Thomas, 1984 `--o †Climacoceras Macinnes, 1936 |-- †C. africanus MacInnes, 1936 `-- †C. gentryi Hamilton, 1978
Reference(s):
- Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698. - Carroll, R. L., 1988: Appendix. 594-648.
in Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698. - Hamilton, W. R., 1978: Cervidae and Palaeomerycidae. 495-508.
in Maglio, V. J. & Cooke, H. B. S., (eds.) 1978: Evolution of African mammals.
–Harvard University Press, Cambridge, Massachusetts & London, England, 1978, xiv-641 - McKenna, M. C. & Bell, S. K., eds., 1997: Classification of mammals; above the species level.
–Columbia University Press, New York, 1997. - Morales, J., Soria, D. & Pickford, M., 1999: New stem giraffoid ruminants from the early and middle Miocene of Namibia.
–Geodiversitas: Vol. 21, #2, pp. 229-253 - Pickford, M., Attia, Y. S. & Abd El Ghany, M. S., 2001: Discovery of Prolibytherium magnieri Arambourg, 1961 (Artiodactyla, Climacoceratidae) in Egypt.
–Geodiversitas: Vol. 23, #4, pp. 647-652 - Tchernov, E., Ginsburg, L., Tassy, P. & Goldsmith, N. F., 1987: Miocene mammals of the Negev (Israel).
–Journal of Vertebrate Paleontology: Vol. 7, #3, pp. 284-310