1. Gastropod predation patterns in the Eocene of Nigeria
2. Baars, D. L. Permian land. Four Corners Geological Society Field Symposium Guidebook. Sept1979. The Permian system, Edited by: Baars, D. L. pp.1–6.
3. Bird, R. T. 1985.Bones for Barnum Brown, 225Fort Worth: Texas Christian University Press.
4. Blakey, R. C. Permianland. Four Corners Geological Society Field Symposium Guidebook. Sept1979. Lower Permian Stratigraphy of the Southern Colorado Plateau, Edited by: Baars, D. L. pp.186