Geoffroy Saint-Hilaire: REFERENCES

Darwin, C. 1859. On the Origin of Species. First edition. John Murray, London. (Facsimile reprinted 1964, Harvard University Press.)

Darwin, C. 1861. "An historical sketch of the progress of opinion on the Origin of Species, previously to the publication of this work." Appended to third and later editions of On the Origin of Species.

"Geoffroy Saint-Hilaire, Étienne." The New Encyclopedia Britannica: Micropaedia. Volume 5, p. 189.

Hall, B.K. 1992. Evolutionary Developmental Biology. Chapman and Hall, London.

Osborn, H.F. 1929. From the Greeks to Darwin: The Development of the Evolution Idea through Twenty-Four Centuries. Charles Scribner's Sons, New York.

Russell, E.R. 1916 (republished 1982). Form and Function: A Contribution to the History of Animal Morphology. University of Chicago Press, Chicago.