Professor Phoebe Cohen of the Geology Department at Williams College will speak at Science Workshop on Friday, 5 April, at 1:00 pm in Dickinson 225.
Her work combines microscopic and microchemical techniques with field-based stratigraphy and sedimentology to reconstruct ancient organisms and ecosystems. She will discuss her research in the context of our current knowledge about the evolution of life during the Neoproterozoic time period — the ~500 million years of Earth history before the rise of animals. While the sudden appearance of animals in the fossil record is dramatically demonstrated in the Cambrian radiation, the groundwork for animal evolution, and the co-occurring changes in marine ecosystems and ocean chemistry, were laid during the Neoproterozoic. Studies of the dynamic earth-life system in deep time present special challenges, but are transforming how we think about biology and geology.
Students interested in having lunch with Dr. Cohen before her talk should be in touch with Kerry Woods.