Hemipsalodon ("half-scissor tooth") is an extinct genus of hyainailourid hyaenodonts from the subfamily Hyainailourinae that lived in North America during the middle to late Eocene.[4][5]
| Hemipsalodon Temporal range: Middle to Late Eocene
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| Skull of Hemipsalodon grandis | |
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| Restoration of H. grandis | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | †Hyaenodonta |
| Superfamily: | †Hyainailouroidea |
| Family: | †Hyainailouridae |
| Subfamily: | †Hyainailourinae |
| Genus: | †Hemipsalodon Cope, 1885 |
| Type species | |
| †Hemipsalodon grandis Cope, 1885
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| Species | |
| Synonyms | |
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synonyms of species:
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Description
editThe skull of Hemipsalodon grandis is 45 centimetres (18 in) in length, with a lower jaw length of 34 centimetres (13 in). The most complete skull (O.M.S.I. No. 619), belonged to an old individual. It is powerfully-built, and overall superficially resembles the mesonychid Harpagolestes. The nasal opening is quite large. The canines are greatly enlarged. The anterior portion of the skull is broad anteriorly, but narrows down considerably posteriorly.[6]
References
edit- ^ E. D. Cope (1885.) "The White River beds of Swift Current River, Northwest Territory." American Naturalist 19(2):163
- ^ E. P. Gustafson (1986.) "Carnivorous mammals of the Late Eocene and Early Oligocene of Trans-Pecos Texas." Texas Memorial Museum Bulletin 33:1-66
- ^ Schlaikjer, Erich M. (1935). "Contributions to the stratigraphy and paleontology of the Goshen Hole area, Wyoming. III. A new basal Oligocene formation". Bulletin of the Museum of Comparative Zoology. 76 (3): 71–93.
- ^ McKenna, Malcolm C.; Bell, Susan K. (1997). Classification of Mammals Above the Species Level. New York: Columbia University Press. ISBN 978-0-231-11012-9. Retrieved 16 March 2015.
- ^ G. F. Gunnell (1998.) "Creodonta". In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), "Evolution of Tertiary Mammals of North America, Volume 1: Terrestrial Carnivores, Ungulates, and Ungulate like Mammals", Cambridge University Press, 703 pages Hemipsalodon
- ^ Mellett, James Silvan (1969). "A skull of Hemipsalodon (Mammalia, Deltatheridia) from the Clarno Formation of Oregon". American Museum Novitates (2387). hdl:2246/2597.
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