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Epigraph for today’s Symposium: “Evolution means change and yet it is only the paleontologist among all biologists who can properly study the time dimension. If the fossil record were not available, many evolutionary problems could not be solved; indeed, many of them would not even be apparent.” (Animal Species and Evolution, Harvard Press, 1963) Ernst Mayr (1904-2005)
Henry Fairfield Osborn (1857-1935) William King Gregory (1876-1970) William Diller Matthew (1871-1930) George Gaylord Simpson (1902-1984)
Simpson’s “adaptive grid” (figs. 26, 28, T & M)
Chapter-by-chapter summary, I-VII, of the argument in Simpson’s Tempo and Mode in Evolution.
Carl Owen Dunbar (1891-1970) Alfred Sherwood Romer (1894-1973)
Simpson Romer Some SVP founding members, Harvard, 1940
“Simpson’s synthesis was the very step that evolutionary paleontology required in his time….It is one of the great achievements in the history of my profession.” (Evolutionary Synthesis, Harvard Press, 1980, p. 169) Stephen Jay Gould (1941-2002)
Expanded version of my talk, with all footnotes and references, can be found in Chapter 2, pp. 17-40. (Columbia University Press, 2000)