After McKenna & Bell, 1997, Zonneveld, Gunnell & Bartels, 2000, and Alroy, 2002
<==o †Leptictidae Gill, 1872 [Synonyms] |?- †Leptonysson basiliscus Van Valen, 1967 [is a pantolestid (Alroy, 2002)??] |--o †Pseudorhyncocyoninae Sigé, 1974 [Pseudorhyncocyonidae Storch & Lister, 1985] | |-- †Leptictidium Tobien, 1962 | `-- †Pseudorhyncocyon Filhol, 1892 `--o †Leptictinae Gill, 1872 non Van Valen, 1967 |--+--o †Prodiacodon Matthew, 1929 [Palaeolestes Matthew, 1918] | | |-- †P. crustulum | | `-- †P. puercensis | `--o †Palaeictops Matthew, 1899 [Parictops Granger, 1910; Hypictops Gazin, 1949] | |-- †P. borealis | |?- †P. syntaphus (Gazin, 1949) [Hypictops] | |-- †P. bridgeri (Simpson, 1959b) | |-- †P. tauricinerei | |-- †P. multicuspis | `-- †P. bicuspis (Cope, 1880) |-- †Myrmecoboides montanensis Gidley, 1915 [=? Myrmecoboides montanus] |-- †Xenacodon mutilatus Matthew & Granger, 1921 |-- †Diaphyodectes Russell, D. E., 1964 |-- †Ongghonia Kellner & McKenna, 1996 |--o †Leptictis Leidy, 1868 ()? [Synonyms] | |?- †L. acutidens [Mesodectes acutidens, Ictops acutidens] | |-- †L. dakotensis | |-- †L. douglassi | |-- †L. haydeni | |-- †L. montanus | |-- †L. thompsoni | `-- †L. wilsoni |?- †Ictopidium `?- †Protictops alticuspidens
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 - Gazin, C. L., 1976: Mammalian faunal zones of the Bridger Middle Eocene.
–Smithsonian Contributions to Paleobiology: No. 26, pp. iv-25 - McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631 - Novacek, M. J., Rougier, G. W., Wible, J. R., McKenna, M. C., Dashzeveg, D. & Horovitz, I., 1997: Epipubic bones in eutherian mammals from
the Late Cretaceous of Mongolia.
–Nature: Vol. 389, 2 October, pp. 483-486 - Zonneveld, J.-P., Gunnell, G. F. & Bartels, W. S., 2000: Early Eocene fossil vertebrates from the southwestern Green River basin, Lincoln and Uinta Counties, Wyoming.
–Journal of Vertebrate Paleontology: Vol. 20, #2, pp. 369-386