References

• Chatterton, B. D. E., Edgecombe, G. D., Speyer, S. E., Hunt, A. S. and Fortey, R. A. 1994. Ontogeny and relationships of Trinucleoidea (Trilobita). Journal of Paleontology, 68, 523 - 540.
• Clarkson, E. N. K. 1998. Invertebrate Palaeontology and Evolution (4th Edition). Blackwell Science, Oxford, 452pp.
• Evitt, W. R. 1961. Early ontogeny in the trilobite family Asaphidae. Journal of Paleontology, 35, 986 - 995.
• Fortey, R. A. 1981. Prospectatrix genatenta (Stubblefield) and the trilobite superfamily Cyclopygacea. Geological Magazine, 118, 603 - 614
• Fortey, R. A. 1985. Pelagic trilobites as an example of deducing the life habits of extinct trilobites. Transactions of the Royal Society of Edinburgh, 76, 219 - 230.
• Fortey, R. A. and Chatterton, B. D. E. 1988. Classification of the trilobite suborder Asaphina. Palaeontology, 31, 165 - 222.
• Fortey, R. A. and Clarkson, E. N. K. 1976. The function of the glabellar 'tubercle' in Nileus and other trilobites. Lethaia, 9, 101 - 106.
• Jell, P. A. and Adrain, J. M. 2003. Available generic names for trilobites. Memoirs of the Queensland Museum, 48, 331 - 553.
• Kaesler, R. L. (ed.) 1997. Treatise on Invertebrate Palaeontology Part O Arthropoda 1 Trilobita, Revised. Geological Society of America and University of Kansas Press, Lawrence, Kansas, 530pp.
• Rudkin, D. M., Young, G. A., Elias, R. J. and Dobrzanski, E. P. 2003. The worlds biggest trilobite - Isotelus rex new species from the Upper Ordovician of northern Manitoba, Canada. Journal of Paleontology, 77, 99 - 112.
  

• Asaphida home
• Superfamily Asaphacea
• Superfamily Cyclopygacea
• Superfamily Trinucleoidea
• Morphological features
• Life habits
• Glossary
• References
  

Author: Laurence Dale
Last updated: 18/11/06
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