Fauna of the Vale and Choza : a new Trematopsid amphibian from the Vale formation / Everett Claire Olson --

v.10:no.26(1956)

Longiscitula houghae; a new genus of dissorophid amphibian from the Permian of Texas / Robert E. DeMar, Asst. Professor of Geology, University of Illinois, Chicago Circle Campus.

v.16:no.2(1966)

Catalogue of type specimens of reptiles and amphibians in Chicago Natural History Museum.

v.36:no.4(1958)