After McKenna & Bell, 1997, with Fossil species from “Paleobiology database”
<==o Cameloidea (camels and related artiodactyls; kamelinsukuiset kamelieläimet) |-- Camelidae (kamelit) `--o †Oromerycidae Gazin, 1955 [†Oromerycinae Wilson, 1974] |-- †Camelodon arapahovius Granger, 1910 |--o †Protylopus Wortman, 1898 | |-- †P. annectens Peterson, 1919 | |-- †P. pearsonensis Golz, 1976 | |-- †P. petersoni Wortman, 1898 [Protylopus minor Prothero 1998; Protylopus parvus Prothero 1998] | |-- †P. robustus Golz, 1976 | `-- †P. stocki Golz, 1976 |-- †Oromeryx plicatus Marsh, 1894 |-- †Merycobunodon littoralis Golz, 1976 |-- †Eotylopus reedi Matthew, 1910 |-- †Malaquiferus tourteloti Gazin, 1955 `-- †Montanatylopus matthewi Prothero, 1986
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