Dictionary of Human Evolution and Biology

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Simpson, George Gaylord

US paleontologist, mammalogist; known for the application of population genetics to analyze the consequences of migrations of mammals between continents, and like Mayr popularized the methodology of neoDarwinism, in Simpson’s case to early mammalian evolution. Worked at the American Museum of Natural History, Columbia, Harvard, and Arizona, where he described many new species. Author of Tempo and Mode in Evolution (1944) and The Major Features of Evolution (1953).

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