- Planktonic foraminiferal evolution, diversity, species turnover events
- Foraminiferal and geochemical evidence for long- and short-term climate, ocean, and biotic change principally during the Cretaceous and Paleogene.
- Mid-Cretaceous oceanic anoxic events
Department of Paleobiology, MRC NHB-121
PO Box 37012
Smithsonian National Museum of Natural History
10th and Constitution Ave., NW
Washington, DC 20013-7012