Ralph B. Hitz

New Basal Interatheriidae (Typotheria, Notoungulata, Mammalia) from the Paleogene of Central Chile

J. J. Flynn, A. Wyss, Ralph B. Hitz, 2006 .

New Interatheres (Mammalia, Notoungulata) from the Late Oligocene Salla Beds of Bolivia

D. Derryberry, G. Billet, Ralph B. Hitz, 2008, Journal of Paleontology.

New interatheriines (Interatheriidae, notoungulata) from the Paleogene of central Chile and southern Argentina /

J. J. Flynn, A. Wyss, M. Reguero, 2000 .