Isotemnidae

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]

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
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