More by George Gaylord Simpson
Principles of Animal Taxonomy
The dechronization of Sam Magruder
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
Fossils and the History of Life
Life of the Past
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
Night Thoughts George Gaylord Simpson's Reflections on Leaving the American Museum of Natural History
Psychoanalytic Terms and Concepts
The Meaning of Evolution A Study of the History of Life and of Its Significance for Man
Penguins Past and Present, Here and There