After Rasmussen & Simons, 1988, Prothero & Schoch, 1989 and McKenna & Bell, 1997
<==o †Pliohyracinae Osborn, 1899 [non Matsumoto, 1926] |-- †Sogdohyrax soriaus Dubrovo, 1978 |-- †Kvabebihyrax kachethicus Gabunia & Vekua, 1966 |--o †Prohyrax Stromer, 1926 | |-- †P. tertiarius Stromer, 1926 | `-- †P. sp.1 [Patterson, 1978] |--o †Parapliohyrax Lavocat, 1961 | |-- †P. mirabilis Lavocat, 1961 | `-- †P. ngororgensis |--o †Pliohyrax Osborn, 1899 | |-- †P. graecus (Gaudry, 1862) | `-- †P. rossignoli (Viret, 1947) `--o †Postschizotherium von Koenigswald, 1932 |-- †P. chardini von Koenigswald, 1932 |-- †P. licenti von Koenigswald, 1966 `-- †P. intermedium von Koenigswald, 1966
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. - McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631 - Meyer, G. E., 1978: Hyracoidea. 284-314
in Maglio, V. J. & Cooke, H. B. S., (eds.) 1978: Evolution of African Mammals.
–Harvard University Press, Cambridge, Massachusetts, London, England, 1978, xiv-641 - Nowak, R. M., 1991: Walker's Mammals of the World; Part 1.
–The Johns Hopkins University Press, Baltimore and London, 1991, xlviii-642-lxiii - Nowak, R. M., 1991: Walker's mammals of the World; Part 2.
–The Johns Hopkins University Press, Baltimore and London, 1991, xii-643-1629 - Prothero, D. R. & Schoch, R. M., 1989: Classification of the Perissodactyla. 530-537.
in Prothero, D. R. & Schoch, R. M., (eds.) 1989: The Evolution of Perissodactyls.
–Oxford University Press, New York, New York & Oxford, England, 1989, ix-537 - Rasmussen, D. T., 1989: The evolution of the Hyracoidea: A review of the fossil evidence. 57-78
in Prothero, D. R. & Schoch, R. M., (eds.) 1989: The Evolution of Perissodactyls.
–Oxford University Press, New York, New York & Oxford, England, 1989, ix-537 - Rasmussen, D. T. & Simons, E. L., 1988: New Oligocene hyracoids from Egypt.
–Journal of Vertebrate Paleontology: Vol. 8, #1, pp. 67-83