Stanford University

Geological Sciences Seminar: Pedro Monarrez, Stanford University

Tuesday, Oct 19, 2021 12:15 PM
More Info:


Faculty/Staff, Students, Alumni/Friends
Department of Geological Science

Alternating macroevolutionary regimes: do mass extinctions alter the rules of evolution? 

Mass extinctions have played a profound role in the evolutionary history of life. A central debate in paleobiology, however, centers on whether mass extinctions represent an intensification of background extinction dynamics versus mass extinctions representing a change in macroevolutionary regimes in which the rules that govern evolution temporarily change. In this talk, I will review some of the work around this debate and present recent work using fossil animal body size and geographic range that sheds light on how mass extinctions have been so important in the evolutionary history of marine life.

Pedro Monarrez is broadly interested in identifying the major underlying environmental and biotic drivers behind evolutionary patterns of marine animal life throughout the fossil record, with current work focusing on body size evolution of marine animals. He also specializes in stratigraphic paleobiology, which involves the application of sequence stratigraphic principles to biological questions in the fossil record. Pedro received his Ph.D. in Geology from the University of Georgia and BS and MS in Geological Sciences from California State University, Fullerton. 

Email Rey Garduño,, for Zoom link and password.

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