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Donald R Prothero

Donald R. Prothero is a professor of geology at Occidental College and coeditor or author of many books, including Horns, Tusks, and Flippers: The Evolution of Hoofed Mammals, published by Johns Hopkins; The Evolution of Perissodactyls; and Bringing Fossils to Life: An Introduction to Paleobiology. Scott E. Foss is the Regional Paleontologist for the Bureau of Land Management in Salt Lake City, Utah.