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

Isotemnidae is a paraphyletic extinct family of notoungulate mammals known from the Early Eocene (Itaboraian) to Middle Miocene (Honda Group, Laventan) of South America.^[1]

Suborder:†Toxodontia

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