Professor of Earth and Planetary Sciences; Director of Graduate Studies
Isotope geochemistry and historical geobiology. Re-animating ancient ecosystems and ocean chemistry using stable isotope systems, chemical speciation techniques, modern microbial experiments (for calibration) and theoretical considerations.
Fisher Professor of Natural History; Professor of Earth and Planetary Sciences, Emeritus
Andy Knoll is the Fisher Professor of Natural History at Harvard University. He received his B.A. in Geology from Lehigh University in 1973 and his Ph.D., also in Geology, from Harvard in 1977.... Read more about Andrew Knoll
Please follow this link to an article in Harvard Magazine featuring the work of Drew Muscente and Andy Knoll - "Ranking Extinctions by Ecological Impact". The article looks at past extinction-level events and draws a potential link to what they may suggest in relation to current environmental conditions.
Before joining the Knoll Group, Drew received a B.S. in Biological Sciences from Cornell University and a Ph.D. in Geosciences from Virginia Tech. As a paleontologist and geobiologist, his work focuses on fossils of complex eukaryotes in the late Neoproterozoic-early Paleozoic interval (~1000-450 Ma) of the geologic record. By studying the paleobiology and paleoenvironments of these fossils, his work aims to understand the rise of animal life and its impact on the Earth system.
Post-Doctoral Fellow Knoll - Pierce - Lauder Groups Junior Fellow of the Society of Fellows
Elizabeth is both a paleontologist and biological oceanographer. She is broadly interested in the evolution, structure, and function of ocean ecosystems. She uses a multi-proxy approach to study how the open ocean ecosystem has changed through time, with a focus on how it has responded to climate and biotic events in the past. Elizabeth works primarily with ichthyoliths, microfossil fish teeth and shark scales found in deep-sea sediments world wide, which preserve an unparalleled record of fish diversity, abundance, and community structure through geologic time.
Interactions between organic and inorganic processes are fundamental to development and growth. The initiation of shell formation in extant shelled molluscs appears to be an evolutionarily conserved process. Nevertheless, the physiology that coordinates biomineralization can be hindered by adverse environmental conditions, during which shells also retain environmental information that can...
Date calibrations for applying molecular clocks to phylogeny are typically provided by fossil or other geologically preserved evidence. However, for the vast majority of the Tree of Life, no fossil record exists. While the paleontological record of lipid biomarkers and microbial microfossils provides some information, these records are extremely sparse, and often ambiguous. ...
Andrew H. Knoll, Fisher Professor of Natural History, Departments of Organismic and Evolutionary Biology, and Earth and Planetary Sciences, Harvard University
We live on a mature planet shaped by four billion years of evolution and environmental change. But what was Earth like in its youth and adolescence? To find out, Andrew Knoll travels to remote locations in search of rocks...