More by George Gaylord Simpson
Principles of Animal Taxonomy
The dechronization of Sam Magruder
Splendid Isolation: The Curious History of South American Mammals
Quantitative Zoology
Tempo and Mode in Evolution
Horses, The Story of the Horse Family in the Modern World and Through Sixty Million Years of History
Life of the Past
Fossils and the History of Life
Night Thoughts George Gaylord Simpson's Reflections on Leaving the American Museum of Natural History
Discoverers of the Lost World An Account of Some of Those who Brought Back to Life South American Mammals Long Buried in the Abyss of Time
The Book of Darwin
Mammals Around the Pacific