CHAPTER

1. Darwin, C (1964 Facsimile Edition). On the Origin ofSpecies by Means of Natural Selection. Cambridge, Mass.: Harvard University Press, (pp. 319-320)

2. Alvarez, L. W. (1983). "Experimental Evidence That an Asteroid Impact Led to the Extinction of Many Species 65 Million Years Ago." Proceedings of the National Academy of Sciences 80: 627-642. (p. 632)

3. Darwin, C. (1964 Facsimile Edition). On the Origin ofSpecies by Means of Natural Selection. Cambridge, Mass.: Harvard University Press.

6. Raup, D. M. (1992). Extinction: Bad Genes or Bad Luck? New York: Norton.

7. Raup, D. M. (1994). "The Role of Extinction in Evolution." Proceedings of the National Academy of Sciences of the United States of America 9 1 : 6758-6763. (p. 6758)

8. Jablonski, D. (1986). Causes and Consequences of Mass Extinctions;

a Comparative Approach. Dynamics of Extinction, ed. D. K. Elliott. New York: John Wiley, pp. 183-229.

9. Raup, D. M., and J. J. Sepkoski, Jr. (1984). "Periodicity of Extinctions in the Geologic Past." Proceedings of the National Academy of Sciences of the United States of America 81(3): 801-805.

10. Raup, D. M. (1992). Extinction: Bad Genes or Bad Luck? New York: Norton.

11. Signor, P. W. I., and J. H. Lipps (1982). Sampling Bias, Gradual Extinction Patterns, and Catastrophes in the Fossil Record. Geological Implications of Impacts of Large Asteroids and Comets on the Earth, eds. L. T. Silver and

P. H. Schultz. Boulder, Colo.: Geological Society of America. (Special Paper 190: 291-296.)

12 Ibid.

14. Russell, D. A. (1982). "The Mass Extinctions of the Late Mesozoic." Scientific American 246( January ): 5 8-65.

15. Alvarez, L. W. (1983). "Experimental Evidence that an Asteroid Impact Led to the Extinction of Many Species 65 Million Years Ago." Proceedings of the National Academy ofSciences 80: 627-642.

16. Williams, M. E. (1994). "Catastrophic Versus Noncatastrophic Extinction of the Dinosaurs: Testing, Falsifiability, and the Burden of Proof." Journal of Paleontology 68: 183-190.

17. Meldahl, K. H. (1990). "Sampling, Species Abundance, and the Stratigraphic Signature of Mass Extinction: A Test Using Holocene Tidal Flat Molluscs." Geology 18: 890-893.

19. Signor, P. W. I., and J. H. Lipps (1982). Sampling Bias, Gradual Extinction Patterns, and Catastrophes in the Fossil Record. Geological Implications of Impacts of Large Asteroids and Comets on the Earth, eds. L. T. Silver and

P. H. Schultz. Boulder, Colo.: Geological Society ofAmerica. (Special Paper 190: 291-296.) (p. 291)

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