Mark Webster, Assistant Professor, Department of the Geophysical Sciences and the College

Recent Publications

Webster, M., and M. L. Zeldtich. 2008. Integration and regulation of developmental systems in trilobites. Pp. 427-433 in Rábano, I., Gozalo, R., and García-Bellido, D (eds.), Advances In Trilobite Research. Cuadernos del Museo Geominero 9. Instituto Geológico y Minero de España, Madrid. [pdf]

Hopkins, M. J., and M. Webster. 2008. Morphological and ontogenetic change in the "Early" Cambrian trilobite Zacanthopsis during an interval of environmental change. Pp. 185-187 in Rábano, I., Gozalo, R., and García-Bellido, D (eds.), Advances In Trilobite Research. Cuadernos del Museo Geominero 9. Instituto Geológico y Minero de España, Madrid. [pdf]

Webster, M., R. R. Gaines, and N. C. Hughes. 2008. Microstratigraphy, trilobite biostratinomy, and depositional environment of the "Lower Cambrian" Ruin Wash Lagerstätte, Pioche Formation, Nevada. Palaeogeography, Palaeoclimatology, Palaeoecology 264: 100-122.

Webster, M. 2007. Paranephrolenellus, a new genus of Early Cambrian olenelloid trilobite. Memoirs of the Association of Australasian Palaeontologists 34: 31-59. [pdf]

Webster, M. 2007. Ontogeny and evolution of the Early Cambrian trilobite genus Nephrolenellus (Olenelloidea). Journal of Paleontology 81 (6): 1168-1193. [pdf]

Webster, M. 2007. A Cambrian peak in morphological variation within trilobite species. Science 317: 499-502. [Abstract] [Full Text]

Webster, M., and M. L. Zelditch. 2005. Evolutionary modifications of ontogeny: heterochrony and beyond. Paleobiology 31 (3): 354-372.

Fusco, G., N. C. Hughes, M. Webster, and A. Minelli. 2004. Exploring developmental modes in a fossil arthropod: growth and trunk segmentation of the trilobite Aulacopleura konincki. American Naturalist 163 (2): 167-183.

Webster, M., P. M. Sadler, M. A. Kooser, and E. Fowler. 2003. Combining stratigraphic sections and museum collections to increase biostratigraphic resolution: Application to Lower Cambrian trilobites from southern California. Pp. 95-128 in P. J. Harries (ed.), High-Resolution Approaches in Stratigraphic Paleontology. Topics in Geobiology, Volume 21. Kluwer Academic Publishers, Dordrecht.

Webster, M., H. D. Sheets, and N. C. Hughes. 2001. Allometric patterning in trilobite ontogeny: Testing for heterochrony in Nephrolenellus. Pp. 105-144 in M.L. Zelditch (ed.), Beyond Heterochrony: The Evolution of Development. John Wiley and Sons, New York.

Dunlop, J. and M. Webster. 1999. Fossil evidence, terrestrialization and arachnid phylogeny. Journal of Arachnology 27: 86-93.

Webster, M., and N. C. Hughes. 1999. Compaction-related deformation in Cambrian olenelloid trilobites and its implications for fossil morphometry. Journal of Paleontology 73: 355-371.

Bowden, A., M. Webster, and T. Mitcham. 1997. Salthill Quarry Geology Trail. Geologists' Association Guide No. 58. Geologists' Association, London. 30 pp.