mainly after McKenna & Bell, 1997
<==o †Procreodi [Arctocyonia Van Valen, 1969] |?-o †Quettacyonidae Gingerich, Abbas & Arif, 1997 [Arctocyonidae: Quettacyoninae Gingerich, Abbas & Arif, 1997] | |-- †Machocyon abbasi Gingerich, Arif, Khan, Clyde & Bloch, 1999 | |-- †Obashtakaia aeruginis Gingerich et al., 1998 | |-- †Quettacyon parachai Gingerich, Abbas & Arif, 1997 | `-- †Sororocyon usmalii Gingerich et al., 1998 |-- †Oxyclaenidae `--+?-o †“Protungulatidae” | |-- †Tiznatzinia vanderhoofi | `--o †Protungulatum Sloan & Van Valen, 1965 [Proungulatum lapsus calami] | |-- †P. gorgun Van Valen, 1978 | |-- †P. sloani Van Valen, 1978 | |-- †P. donnae Sloan & Van Valen, 1965 | `-- †P. mckeeveri Archibald, 1982 `--+-- †Arctocyonidae Giebel, 1855 `-- “Other Eparctocyonan ungulates”
Reference(s):
- Alroy, J., 2002: North American fossil mammal systematics database.
–iNet: North American fossil mammal systematics database: http://www.nceas.ucsb.edu/~alroy/nafmsd.html - 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 - Gunnell, G. F., 1994: Paleocene mammals and faunal analysis of the Chappo type locality (Tiffanian), Green River Basin, Wyoming.
–Journal of Vertebrate Paleontology: Vol. 14, #1, pp. 81-104 - Luo, Z.-X., 1991: Variability of dental morphology and the relationships of the earliest arctocyonid species.
–Journal of Vertebrate Paleontology: Vol. 11, #4, pp. 452-471 - McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631 - de Muizon, C. & Cifelli, R. L., 2000: The “condylarths” (archaic Ungulata, Mammalia) from the early Palaeocene of Tiupampa (Bolivia): implications on the origin of the South American ungulates.
–Geodiversitas: Vol. 22, #1, pp. 47-150 - 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. - Thewissen, J. G. M., Williams, E. M. & Hussain, S. T., 2001: Eocene mammals faunas from Northern Indo-Pakistan.
–Journal of Vertebrate Paleontology: Vol. 21, #2, pp. 347-366