Notohippus

Notohippus Temporal range: Early Miocene (Santacrucian) ~17.5–16.3 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Notoungulata
Family:	†Notohippidae
Genus:	†Notohippus Ameghino 1891
Species
N. toxodontoides (type) Ameghino 1891

Notohippus is an extinct genus of notoungulate mammal from the Early Miocene (Santacrucian in the SALMA classification) Santa Cruz Formation, Río Bote, Argentina.^[1]

Description

Notohippus had high crowned teeth with cementum, similar to the situation of grazing equids.^[2][3]

References

1. Notohippus at Fossilworks.org
2. Rose, Kenneth D. The beginning of the age of mammals. JHU Press, 2006.
3. Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 252. ISBN 978-1-84028-152-1.