1. BAMBACH, R.K., BEFORE PANGEA - GEOGRAPHIES OF THE PALEOZOIC WORLD, AMERICAN SCIENTIST 68: 26 (1980).
2. GEOLOGICAL SOCIETY OF AMERICA SPECIAL PAPERS 1973 147
3. Evolution and Extinction Rate Control 1975
4. Boucot, A. J., Historical Biogeographv, Plate Tectonics, and the Changing Environment: 465 (1979).
5. BOUCOT, A.J., DOES EVOLUTION TAKE PLACE IN AN ECOLOGICAL VACUUM .2., JOURNAL OF PALEONTOLOGY 57: 1 (1983).