Tritemnodon

Tritemnodon Temporal range: 50.3–46.2  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ Early Eocene
Restoration of Tritemnodon agilis
Tritemnodon agilis skeleton
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	† Hyaenodonta
Genus:	† Tritemnodon Matthew, 1906 [1]
Type species
†Tritemnodon agilis Marsh, 1872 [2]
Species
†T. agilis(Marsh, 1872) †T. sp. [FMNH PM 55839] (Tomiya, 2021) [3]
Synonyms
synonyms of species: T. agilis: Limnocyon agilis(Marsh, 1872) Sinopa agilis(Matthew, 1901) [4] Sinopa brevicalcaratus(Cope, 1872) [5] Sinopa gracilis(Wortman, 1902) [6] Stypolophus agilis Stypolophus brevicolcarabus(Cope, 1872) Stypolophus brevicalcaratus(Cope, 1872)

Tritemnodon ("three cutting teeth") was an extinct genus of placental mammals from extinct order Hyaenodonta, that lived in North America during the early Eocene. ^{[7] [8]} Fossils of Tritemnodon agilis have been found in Utah and Wyoming (Willwood Formation of Big Horn County and the Lower Bridger Formation of Uinta County). It was the size of a wolf.

References

1. Matthew, W. D. (1906.) "The Osteology of Sinopa, a Creodont Mammal of the Middle Eocene." Proc. U. S. Nat. Mus., Vol. XXX, pp. 203-233, pl. XVI
2. O. C. Marsh (1872.) "Preliminary description of new Tertiary mammals. Part II." American Journal of Science 4(21):202-224
3. Tomiya, S.; Zack, S. P.; Spaulding, M.; Flynn, J. J. (2021). "Carnivorous mammals from the middle Eocene Washakie Formation, Wyoming, USA, and their diversity trajectory in a post-warming world". Journal of Paleontology. 95 (Supplement S82): 1–115. doi:10.1017/jpa.2020.74.
4. Matthew, W. D. (1901.) "Additional observations on the Creodonta." Bulletin of the American Museum of Natural History, 14: 1-38
5. E. D. Cope (1872.) "Third account of new Vertebrata from the Bridger Eocene of Wyoming Valley." Proceedings of the American Philosophical Society (separate) 1-4
6. J. L. Wortman (1902.) "Studies of Eocene Mammalia in the Marsh Collection, Peabody Museum." The American Journal of Science, series 4 13:433-448
7. Gingerich, Philip D.; Harvey A. Deutsch (1989). "Systematics and evolution of early Eocene Hyaenodontidae (Mammalia, Creodonta) in the Clarks Fork Basin, Wyoming". Museum of Paleontology, University of Michigan. 27 (13): 327–391.
8. Naoko Eg (2004.) "A new genus and species of hyaenodontid creodont from the Pondaung Formation (Eocene, Myanmar)" Journal of Vertebrate Paleontology 24(2): 502–506 doi : 10.1671/2481