Publications

*indicates student

*Nagy, R. M., Porter, S. M., Dehler, C. M., and Y. Shen. 2009. Biotic turnover driven by eutrophication before the Sturtian low-latitude glaciation. Nature Geoscience. doi:10.1038/ngeo525 link News coverage: Astrobiology Magazine; UPI; Science Daily

Porter, S. M. 2008. Skeletal microstructure indicates chancelloriids and halkeriids are closely related. Palaeontology 51(4): 865-879. link
Porter, S. M. 2007. Seawater chemistry and early carbonate biomineralization. Science 316:1302. Abstract full text hi-res figure
Dehler, C. M., S.M. Porter, D. A Sprinkel, and L.D. DeGrey. 2007. The Neoproterozoic Uinta Mountain Group revisited: a synthesis of recent work on the Red Pine Shale and undivided clastic strata, northeastern Utah. Pp. 151-166 in Link, P.K., & Lewis, R. (eds.): Proterozoic Geology of Western North America and Siberia. SEPM Special Publication 86. pdf
Porter, S. M. 2006. The Proterozoic fossil record of heterotrophic protists. In Xiao, S., and Kaufman, A.J. (eds.), Neoproterozoic Geobiology. Geobiology Series. pdf
*Nagy, R.M., and S. M. Porter. 2005. Paleontology of the Neoproterozoic Uinta Mountain Group. In Dehler, C.M., Pederson, J.L., Sprinkel, D.A., and Kowallis, B.J. (eds.), Uinta Mountain Geology. Utah Geological Association Publication 33, p. 49-62. pdf
Dehler, C.M., D. A. Sprinkel, and S. M. Porter. 2005. Neoproterozoic Uinta Mountain Group of northeastern Utah: pre-Sturtian geographic, tectonic, and biologic evolution. In Pederson, J., and Dehler, C.M. (eds.), Interior Western United States. Geological Society of America Field Guide 6, p.1-26. pdf
Porter, S. M. 2004. Halkieriids in Middle Cambrian phosphatic limestones from Australia. Journal of Paleontology78(3): 574-590. link
Porter, S. M., A. H. Knoll, and P. Affaton. 2004. Chemostratigraphy of a Neoproterozoic ‘cap’ carbonate from the Volta Basin, West Africa. Precambrian Research 130: 99-112. pdf
Porter, S. M. 2004. Closing the ‘phosphatization window’: implications for interpreting the record of small shelly fossils. Palaios 78: 178-183. link
Porter, S. M. 2004. The fossil record of early eukaryotic diversification. Paleontological Society Papers 10: 35-50. pdf
Porter, S. M., R. Meisterfeld, and A. H. Knoll. 2003. Vase-shaped microfossils from the Neoproterozoic Chuar Group, Grand Canyon: a classification guided by modern testate amoebae. Journal of Paleontology 77(3): 409-429. link

Porter, S. M., and A. H. Knoll. 2000. Neoproterozoic testate amoebae: evidence from vase-shaped microfossils in the Chuar Group, Grand Canyon. Paleobiology 26(3): 360-385. link
Karlstrom, K. E., S. A. Bowring, C. M. Dehler, A. H. Knoll, S. M. Porter, D. J. Des Marais, A. B. Weil, Z. D. Sharp, J. W. Geissman, M. B. Elrick, J. M. Timmons, L. J. Crossey, and K. L. Davidek. 2000. Chuar Group of the Grand Canyon: record of breakup of Rodinia, associated change in the global carbon cycle, and ecosystem expansion by 740 Ma. Geology 28: 619-622. link
Dehler, C., S. Porter, and K. Karlstrom. 1999. Grand Canyon Supergroup. Grand Canyon River Guides 12(3): 31-35. link

 

Papers In Press
Vendrasco, M. J., Porter, S. M., Kouchinsky, A. G., Li, G., and C. Z. Fernandez. In Press. New data on molluscs and their shell microstructures from the Middle Cambrian Gowers Formation, Australia. Palaeontology.
Vendrasco, M. J., Li, G., Porter, S. M., and C. Z. Fernandez. In Press. New data on the enigmatic Oruranus-Eohalobia group of early Cambrian small skeletal fossils. Palaeontology.
Dehler, C. M., Porter, S. M., Timmons, M., and R. M. Nagy. In press. Along the Chuar Shoreline: the Neoproterozoic Earth System Revealed in eastern Grand Canyon.  In: M. Timmons (ed.), Advances in Understanding the Geology of Eastern Grand Canyon. Grand Canyon Association Monographs.
Halverson, G. P., Hurtgen, M. T., Porter, S. M., and A. S. Collins. In press. Biogeochemical Events Across the Precambrian-Cambrian Boundary. In: Gaucher, C., Sial, A., Halverson, G. P., and H. Frimmel (eds.). Neoproterozoic-Cambrian Tectonics, Global Change and Evolution: A Focus on Southwestern Gondwana. Elsevier, Developments in Precambrian Geology Series.

 

Papers In Review
Johnston, D. T., Poulton, S. W., Dehler, C. M., Porter, S. M., Husson, J., Canfield, D. E., and A. H. Knoll. Submitted. An emerging picture of Neoproterozoic ocean chemistry: Insights from the Chuar Group, Grand Canyon, USA. Earth and Planetary Science Letters.


 

Papers In Preparation
Porter, S. M. In prep. Seawater chemistry and the de novo deployment of carbonate biominerals.
*Moore, J. L. Porter, S. M., Steiner, M., and G. Li. In prep. Cambrothyra ampulliformis, an unusual coeloscleritophoran from the lower Cambrian of Shaanxi Province, China.


 


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