Literature Cited  

Campbell, Neil. 1996. Biology. 4th Ed. Benjamin-Cummings, Menlo Park, California. 

Dawkins, Richard. 1976. The Selfish Gene. Oxford University Press 

Dawkins, R. 1982. The Extended Phenotype. Oxford University Press 

Dawkins, R. 1986. The Blind Watchmaker. W.W. Norton Co., NY. 332 pp. ISBN 0-393- 30448-5 (paperback) 

Darwin, Charles. 1859. The Origin of Species. Reprinted by Penguin, London 

Dennett, Daniel. 1995. Darwin's Dangerous Idea: Evolution and the meanings of life. Simon and Schuster, NY. 586 pp. ISBN 0-684-80290-2

Gould, Steven Jay. 1989. Wonderful Life: The Burgess shale and the nature of history. W.W. Norton Co. NY. 347 pp. ISBN 0-303-30700-X (paperback)