Interatheriidae

 ( Typotheres ) 

Interatheriidae is an extinct family of Notoungulata from South America. Interatheriids are known from the Eocene (Mustersan) to the Pleistocene (Uquian).McKenna & Bell, 1997Linares, 2004 These animals were principally small-sized, occupying a habitat like hares, marmots and viscachas. The majority were very small, like rodents.

Interatheriidae is one of the mammal groups that best represent the fauna from the Santa Cruz Formation. Particularly Protypotherium with three species is characteristic of the formation: P. australe, P. praerutilum and P. attenuatum. Another well-known genus is Interatherium, particularly well represented by I. robustum.

• McKenna, Malcolm C., and Bell, Susan K. 1997. Classification of Mammals Above the Species Level. Columbia University Press, New York, 631 pp.

• C. Villarroel and L. G. Marshall. 1989. A new fossil land mammal locality of late Miocene (Huayquerian) age from Muyu Huasi, southcentral Bolivia. Boletin del Servicio Geológico de Bolivia, Serie A IV(1):27-40