Isotemnidae

Isotemnidae; Temporal range: Late Paleocene-Middle Miocene; (Itaboraian-Laventan); ~
	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]

^ 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

Isotemnidae Temporal range: Late Paleocene-Middle Miocene (Itaboraian-Laventan) ~

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