P
Phoebe Cohen
Researcher at Williams College
Publications - 34
Citations - 2289
Phoebe Cohen is an academic researcher from Williams College. The author has contributed to research in topics: Geology & Glacial period. The author has an hindex of 15, co-authored 29 publications receiving 1925 citations. Previous affiliations of Phoebe Cohen include Harvard University & Massachusetts Institute of Technology.
Papers
More filters
Journal ArticleDOI
Eukaryotic organisms in Proterozoic oceans
TL;DR: Focus on character evolution permits inferences about the innovations in cell biology and development that underpin the taxonomic and morphological diversification of eukaryotic organisms.
Journal ArticleDOI
Calibrating the Cryogenian.
Francis A. Macdonald,Mark D. Schmitz,James L. Crowley,Charles F. Roots,David S. Jones,Adam C. Maloof,Justin V. Strauss,Phoebe Cohen,David T. Johnston,Daniel P. Schrag +9 more
TL;DR: Four high-precision U-Pb ages for Neoproterozoic rocks in northwestern Canada are presented that constrain large perturbations in the carbon cycle, a major diversification and depletion in the microfossil record, and the onset of the Sturtian glaciation.
Journal ArticleDOI
Snowball Earth climate dynamics and Cryogenian geology-geobiology
Paul Hoffman,Paul Hoffman,Dorian S. Abbot,Yosef Ashkenazy,Douglas I. Benn,Jochen J. Brocks,Phoebe Cohen,Grant M. Cox,Grant M. Cox,Jessica R. Creveling,Yannick Donnadieu,Yannick Donnadieu,Douglas H. Erwin,Douglas H. Erwin,Ian J. Fairchild,David Ferreira,Jason C. Goodman,Galen P. Halverson,Malte F. Jansen,Guillaume Le Hir,Gordon D. Love,Francis A. Macdonald,Adam C. Maloof,Camille A. Partin,Gilles Ramstein,Brian E. J. Rose,Catherine V. Rose,Peter M. Sadler,Eli Tziperman,Aiko Voigt,Aiko Voigt,Stephen G. Warren +31 more
TL;DR: Modeling shows that the small thermal inertia of a globally frozen surface reverses the annual mean tropical atmospheric circulation, producing an equatorial desert and net snow and frost accumulation elsewhere, and that the evolutionary legacy of Snowball Earth is perceptible in fossils and living organisms.
Journal ArticleDOI
Large Spinose Microfossils in Ediacaran Rocks as Resting Stages of Early Animals
TL;DR: The form, diversity, and stratigraphic range of LOEMs illuminate life cycle evolution in early animals as influenced by the evolving redox state of the oceans.
Journal ArticleDOI
The Proterozoic Record of Eukaryotes
TL;DR: For example, the authors show that mean within assemblage diversity increases through the Proterozoic Eon due to an increase in high diversity assemblages, and that this trend is robust to various external factors including lithology and paleogeographic location.