Supplementary Reference List

Barnes, R. S. K., P. Calow, P. J. W. Olive, D. W. Golding and J. I. Spicer. 2001. The Invertebrates: A Synthesis. Third Edition. Blackwell Science, Oxford. 497 pp.

Briggs, D. E. G., D. H. Erwin and F. J. Collier. 1994. The Fossils of the Burgess Shale. Smithsonian Institution Press, Washington, D. C. 238 pp.

Carroll, S. B., J. K. Grenier and S. D. Weatherbee. 2001. From DNA to Diversity: Molecular Genetics and the Evolution of Animal Design. Blackwell, Oxford. 214 pp.

Cowen, R. 2000. History of Life. Third Edition. Blackwell Science, Oxford. 432 pp.

Nardi, J. B. 2003. The World Beneath Our Feet: A Guide to Life in the Soil. Oxford Univ. Press, Oxford. 223 pp.

Nielsen, C. 1995. Animal Evolution: Interrelationships of the Living Phyla. Oxford Univ. Press, Oxford. 467 pp.

Raff, R. A. 1996. The Shape of Life: Genes, Development and the Evolution of Animal Form. Univ. Chicago Press, Chicago. 520 pp.

Valentine, J. W. 2004. On the Origin of Phyla. Univ. Chicago Press, Chicago. 614 pp.

Voshell, J. R. 2002. A Guide to Freshwater Invertebrates of North America. MacDonald and Woodward, Blacksburg, Va. 442 pp.