A primitive pyrothere (Mammalia, Notoungulata) from the early Tertiary of northwestern Venezuela / Bryan Patterson --.

v.33:no.22(1977)

Notoungulata and Litopterna of the Early Miocene Chucal fauna, northern Chile / Darin A. Croft --, John J. Flynn --, André R. Wyss --.

n.s. no.50(2004)

The early history of man : with special reference to the Cap-Blanc skeleton / by Henry Field, Assistant Curator of Physical Anthropology.

no.26(1927)

New and little known genera and species of vertebrates from the Lower Permian of Oklahoma / [by] Everett C. Olson -- [Patricia M. Williams, editor]

v.18:no.3(1970)