Toby White, the webmaster at Palaeos.com and wikipedia for copyright permission, also Liz Loeffer for access to the University of Bristol University teaching collection and Professor Benton for permission to reproduce his asteroid morphology diagram.
Benton, M. and Harper, D. 1997. Basic Palaeontology. Addison Wesley Longman, pp 132-155
Blake, D. B. 1987. A classification and phylogeny of post-Paleozoic sea stars (Asteroidea: Echinodermata). Journal of Natural History, 21, 481-528.
Clarkson, E. N. K. 2001. Invertebrate Palaeontology and Evolution. Blackwell Science, pp 262-317.
David, B. and Mooi, R. 1997. Major events in the evolution of echinoderms viewed by the light of embryology. In Echinoderms: San Francisco (R. Mooi and M. Telford, eds.). Balkema, Rotterdam. In press.
Littlewood, D. T. J., Smith, A. B., Clough, K. A. and Emson, R. H. 1997. The interrelationships of the echinoderm classes: morphological and molecular evidence. Biol. J. Linn. Soc. 61, 409-438.
Sumrall, C. and J. Sprinkle. 1997. Phylogenetic analysis of living Echinodermata based on primitive fossil taxa. In Echinoderms: San Francisco (R. Mooi and M. Telford, eds.). Balkema, Rotterdam. In press.
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Author: Elizabeth Sweet
Last updated: 22nd November 2005
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