Oldfieldthomasiidae

Oldfieldthomasiidae; Temporal range: Late Paleocene-Late Eocene; ~
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Notoungulata
Suborder:	†Typotheria
Family:	†Oldfieldthomasiidae; Simpson, 1945
Genera
	†Allalmeia; †Brachystephanus; †Camargomendesia; †Colbertia; †Dolichostylodon; †Itaboraitherium; †Kibenikhoria; †Maxschlosseria; †Oldfieldthomasia; †Paginula; †Suniodon; †Tsamnichoria; †Ultrapithecus; †Xenostephanus
Synonyms
	Acoelodidae Ameghino 1901;

Oldfieldthomasiidae is an extinct family of notoungulate mammals known from the Late Paleocene to Late Eocene of South America. The family was classified by George Gaylord Simpson in 1945 and a synonym is Acoelodidae, defined by Florentino Ameghino in 1901.

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