Sara Pruss

Sara Pruss is the Esther Cloudman Dunn Professor of Geosciences at Smith College, where she has established herself as a leading researcher in geobiology and paleontology. Her work focuses on critical transitions in Earth's history, particularly mass extinctions and the evolution of early life forms. She maintains an active research program that combines field work, laboratory analysis, and theoretical approaches to understand the complex interactions between life and Earth's environments through geological time.

Education:

• Ph.D., University of Southern California
• M.S., University of Southern California
• B.S., University of Rochester

Professor Pruss's research spans several interconnected areas within geobiology and paleontology. Her primary focus is on understanding mass extinction events, particularly the end-Permian extinction and Cambrian-Ordovician transitions. She investigates how these events affected marine ecosystems and the subsequent recovery patterns. Her work on Neoproterozoic carbonates and early animal evolution has provided important insights into the environmental conditions that facilitated the emergence of complex life. Professor Pruss also examines microbial sedimentary structures and their implications for interpreting ancient environments. Her research often combines detailed field observations with geochemical analyses to reconstruct paleoenvironments and understand the taphonomic processes that affect fossil preservation.

Analysis of Professor Pruss's recent publications reveals a consistent focus on critical transitions in Earth's history. Her work spans the Ediacaran-Cambrian boundary, the Cambrian-Ordovician transition, and the Permian-Triassic extinction. A recurring theme is the relationship between environmental changes (particularly oxygenation and redox conditions) and biological evolution. Her research increasingly incorporates geochemical proxies like mercury chemostratigraphy to identify potential volcanic triggers for extinction events. The geographical scope of her work is global, with field sites in North America, Scotland, Namibia, and the Arctic.

Scientific Awards:

• Outstanding Contributions to Geobiosciences by the Society for Geobiology and Geomicrobiology (2014)
• Sherrerd Prize for Distinguished Teaching by Smith College (2015)

Professor Pruss has mentored numerous undergraduate students through her research lab at Smith College. Several of her former students, including Katie Castagno, Jana Burke, Kelsey Moore, Sophie Westacott, and Kiara Gomez, have gone on to earn PhDs from prestigious institutions like MIT, Yale, and Woods Hole. Her research has been consistently supported by major funding agencies including the National Science Foundation and the National Geographic Society. Beyond her research mentorship, Professor Pruss has been actively involved in programs aimed at supporting underrepresented women in STEM fields, demonstrating her commitment to inclusive excellence in science education.

Professor Pruss leads an active research laboratory at Smith College that combines field, laboratory, and analytical approaches to geobiological research. Her lab has produced numerous publications with undergraduate co-authors, reflecting Smith's strong emphasis on undergraduate research. The lab's work often involves international collaborations with researchers from institutions around the world. Current research directions include investigating the relationship between oxygenation and early animal evolution, studying microbial influences on sedimentary structures, and examining the environmental triggers for major extinction events throughout Earth's history.