ISOTEMNIDAE

Isotemnidae; Temporal range: Late Paleocene- Middle Miocene; ( Itaboraian- Laventan); ~59.0–11.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N
	Thomashuxleya
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	† Notoungulata
Suborder:	† Toxodontia
Family:	† Isotemnidae; Ameghino 1897
Genera
	† Anisotemnus; † Coelostylodon; † Distylophorus; † Hedralophus; † Isotemnus; † Lophocoelus; † Pampatemnus; † Periphragnis; † Pleurocoelodon; † Pleurostylodon; † Rhyphodon; † Thomashuxleya

Isotemnidae is an extinct family of notoungulate mammals known from the Paleocene ( Las Flores Formation, Itaboraian) to Middle Miocene ( Honda Group, Laventan) of South America.^[1]

References

^ McKenna, Malcolm C., and Bell, Susan K. 1997. Classification of Mammals Above the Species Level. Columbia University Press, New York, 631 pp. ISBN 0-231-11013-8

Goin, F. J.; Candela, A.M.; Abello, M.A.; Oliveira, E.V. (2009), "Earliest South American paucituberculatans and their significance in the understanding of 'pseudodiprotodont' marsupial radiations", Zoological Journal of the Linnean Society, 155 (4): 867–884, doi: 10.1111/j.1096-3642.2008.00471.x, retrieved 2019-02-15
M. McKenna. 1956. Survival of primitive Notoungulates and Condylarths into the Miocene of Colombia. American Journal of Science 254:736-743

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Isotemnidae Temporal range: Late Paleocene- Middle Miocene ( Itaboraian- Laventan) ~59.0–11.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N

Thomashuxleya
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	† Notoungulata
Suborder:	† Toxodontia
Family:	† Isotemnidae Ameghino 1897
Genera
† Anisotemnus † Coelostylodon † Distylophorus † Hedralophus † Isotemnus † Lophocoelus † Pampatemnus † Periphragnis † Pleurocoelodon † Pleurostylodon † Rhyphodon † Thomashuxleya