
Principal Investigator:

Seth Finnegan: I am particularly interested in (1) Patterns of extinction selectivity, and what they can tell us about the changing drivers of the extinction process and how differential extinction has shaped evolution through time, (2) Using environmental proxy data (stable isotopes, biomarkers, sedimentology) to understand the physical context of major evolutionary and ecological events recorded by the fossil record, and (3) Developing taxon-free methods to reconstruct the structure and function of marine ecosystems (e.g. as energy- and nutrient-exchange networks) through time. Much of my recent and continuing work focuses on the Ordovician Period (488 to 444 million years ago) because it is widely agreed (by me) to be the most interesting interval in Earth history, including as it does a broad-based and very rapid global biodiversification and a major mass extinction.
Postdocs:

Broc Kokesh: I am a postdoctoral fellow supported through NSF’s Division of Ocean Sciences, previously obtaining my PhD in Geophysical Sciences at the University of Chicago. I study ecological and taphonomic dynamics of actively accumulating shell material in the surficial sediment layers of modern marine ecosystems. These ‘death assemblages’ are powerful tools by which I pursue two primary lines of research: (1) extending the temporal perspective of modern ecosystems to inform conservation efforts, and (2) testing for paleoecological interpretations of deep-time fossil records. Here at UC Berkeley, I am examining the animal-sediment relationships at shell gravel habitats along the latitudinal gradient of the Eastern Pacific shelf. I also collaborate with biomonitoring agencies from Southern California to Puget Sound, from whom I ‘rescue’ dead shell assemblages from disposal and make use of their excellent long-term living community datasets.
Graduate Students:

Ryan Yohler: My name is Ryan and I am a 5th year Ph.D. Candidate. I am broadly interested in questions that utilize quantitative paleobiological/ecological models as well as questions at the intersection of geology and ecology. I am currently working on niche models of graptolites using a holistic Earth-system approach.

Maya Samuels-Fair: I am a 5th year PhD Candidate interested in extinction and origination patterns linked to life-history traits such as sexual dimorphism, reproductive mode, and dispersal. Although I also think about these trends in ostracodes and foraminifera, my focus is larval brooding and growth form in Mesozoic to modern Bryozoa.

Kayli Stowe: I am a 3rd year PhD Candidate who has broad interests in studying how environmental change impacts ecological and evolutionary trends over time. I think about these trends primarily in mollusks that lived in the ancient inland sea that was in the Central Valley of California from the Miocene to the Pleistocene.
Lab Alumni
Postdocs:
Graduate Students:
- Sara Kahanamoku-Meyer
- Joshua Zimmt
- Larry Taylor
- Emily Orzechowski
- Brett Archuleta
- Caitlin Boas
Undergraduate Students:
- Leah Kahn
- Max Titcomb
- Sapon Chupongstimun
- Alyssa Barbosa
- Tyler Dang
- Jesse Gill
- Leyla Namazie
- Ben Shein
- Lexi Dobson
- Abigail Kelly
- Zev Brook
- Maggie George
- Jonathan Graham
- Kayla Kettmann
- Giselle Lopez
- Nadia Maarfi
- Sydney Minges
- Tran Nguyen
- Adrian Overly
- James Saulsbury
- Nannaphat Sirison
- Lena Tran
- Vishruth Venkataraman
- Matthew Yee
- Chloe Golde
- Judah Marsden
- Heather McCandless
- Stephanie Wang
- Nina Jaeger
Lab technicians:
- Sarah Granke (BA, Pomona College 2017)
- James Saulsbury (BA, UC Berkeley 2015)
If your name, photo, or info is missing from this page, please send it to maya_samuelsfair@berkeley.edu
August 2024 fieldwork at Friday Harbor Laboratories in Washington state.
