Notostylopidae

Notostylopidae is an extinct family comprising five genera of notoungulate mammals known from the Late Paleocene (Riochican) to Early Oligocene (Tinguirirican) of Argentina, Brazil and Chile in South America[1]

Notostylopidae Temporal range: Late Paleocene-Early Oligocene (Riochican-Tinguirirican) ~58.7–28.4 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Skull of Notostylops
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Notoungulata
Suborder:	†Notioprogonia
Family:	†Notostylopidae Ameghino 1897
Genera
†Boreastylops †Edvardotrouessartia †Homalostylops †Notostylops †Otronia

References

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