Species bibliography

Cain, A. J., 1963, Animal Species and Their Evolution [2nd ed.]: London, Hutchinson.

Dobzhansky, T., 1937, Genetics and the Origin of Species [1st ed.]: New York, Columbia University Press.

Mayr, E., 1963, Animal Species and Evolution: Cambridge, Mass., Harvard University Press.

Raup, D. M., 1976, Species diversity in the Phanerozoic: an interpretation: Paleobiology, v. 2, p. 289-297.

Valentine, J. W., 1977, Transspecific Evolution, in Dobzhansky, T., Ayala, F. J., Stebbins, G. L., and Valentine, J. W., eds., Evolution: San Francisco, W. H. Freeman & Co., p. 233-261.