Oxyaenidae

Oxyaenidae; Temporal range: Late Paleocene to Middle Eocene
	skull of Palaeonictis occidentalis
	reconstruction of Patriofelis ferox
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Mirorder:	Ferae
Clade:	Pan-Carnivora
Order:	†Oxyaenodonta; Van Valen, 1971
Family:	†Oxyaenidae; Cope, 1877
Type genus
	†Oxyaena; Cope, 1874
Subfamilies
	†Machaeroidinae; †Oxyaeninae; †Palaeonictinae; †Tytthaeninae;
Synonyms
	synonyms of order: Oxyaenida (Van Valkenburgh, 2007) ; synonyms of family: Oxyaenoidea (Osborn, 1910) ;

Oxyaenidae ("sharp hyenas") is a family of extinct carnivorous placental mammals.^[3] Traditionally classified in order Creodonta, this group is now classified in its own order Oxyaenodonta ("sharp tooth hyenas") within clade Pan-Carnivora in mirorder Ferae. The group contains four subfamilies comprising fourteen genera. Oxyaenids were the first to appear during the late Paleocene in North America, while smaller radiations of oxyaenids in Europe and Asia occurred during the Eocene.^[4]

^ E. D. Cope (1877.) "Report upon the extinct Vertebrata obtained in New Mexico by parties of the expedition of 1874." Report upon United States Geographical Surveys West of the One Hundredth Meridian, in charge of First Lieut. G.M. Wheeler, Corps of Engineers, U.S. Army, Vol. IV Paleontology, Part II, pp. 1-365. Government Printing Office, Washington, D.C.
^ Van Valen, Leigh (1971). "Adaptive Zones and the Orders of Mammals". Evolution. 25 (2): 420–428. doi:10.1111/j.1558-5646.1971.tb01898.x. PMID 28563121.
^ Halliday, Thomas J. D.; Upchurch, Paul; Goswami, Anjali (2015). "Resolving the relationships of Paleocene placental mammals" (PDF). Biological Reviews. 92 (1): 521–550. doi:10.1111/brv.12242. ISSN 1464-7931. PMC 6849585. PMID 28075073.
^ Gunnel, Gregg F.; Gingerich, Philip D. (30 Sep 1991). "Systematics and evolution of late Paleocene and early Eocene Oxyaenidae (Mammalia, Creodonta) in the Clarks Fork Basin, Wyoming" (PDF). Contributions from the Museum of Paleontology. 28 (7). The University of Michigan: 141–180. Retrieved 2010-01-03.

[1] E. D. Cope (1877.) "Report upon the extinct Vertebrata obtained in New Mexico by parties of the expedition of 1874." Report upon United States Geographical Surveys West of the One Hundredth Meridian, in charge of First Lieut. G.M. Wheeler, Corps of Engineers, U.S. Army, Vol. IV Paleontology, Part II, pp. 1-365. Government Printing Office, Washington, D.C.

[2] Van Valen, Leigh (1971). "Adaptive Zones and the Orders of Mammals". Evolution. 25 (2): 420–428. doi:10.1111/j.1558-5646.1971.tb01898.x. PMID 28563121.

[HallidayUpchurch2015-3] Halliday, Thomas J. D.; Upchurch, Paul; Goswami, Anjali (2015). "Resolving the relationships of Paleocene placental mammals" (PDF). Biological Reviews. 92 (1): 521–550. doi:10.1111/brv.12242. ISSN 1464-7931. PMC 6849585. PMID 28075073.

[4] Gunnel, Gregg F.; Gingerich, Philip D. (30 Sep 1991). "Systematics and evolution of late Paleocene and early Eocene Oxyaenidae (Mammalia, Creodonta) in the Clarks Fork Basin, Wyoming" (PDF). Contributions from the Museum of Paleontology. 28 (7). The University of Michigan: 141–180. Retrieved 2010-01-03.

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Oxyaenidae Temporal range: Late Paleocene to Middle Eocene

skull of Palaeonictis occidentalis

reconstruction of Patriofelis ferox
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Mirorder:	Ferae
Clade:	Pan-Carnivora
Order:	†Oxyaenodonta Van Valen, 1971^[2]
Family:	†Oxyaenidae Cope, 1877^[1]
Type genus
†Oxyaena Cope, 1874
Subfamilies
†Machaeroidinae †Oxyaeninae †Palaeonictinae †Tytthaeninae
Synonyms
synonyms of order: Oxyaenida (Van Valkenburgh, 2007) synonyms of family: Oxyaenoidea (Osborn, 1910)