Indiana University Bloomington


Claudia Johnson

Claudia Johnson, Associate Professor

Claudia’s research interests focus on the evolution and extinction history of corals, rudist bivalves and other reef organisms. Claudia studies reef ecosystem evolution and the relation of reefs to tropical paleoclimatology and paleoceanography. Recent interests include the investigation of hierarchy theory, and the fit of reefs into this theoretical framework, as well as the integration of mathematics and reef systems. Claudia has edited volumes on the Evolution of the Cretaceous Ocean-Climate System (GSA Special Paper 332, 1999), and Land-Ocean Interactions of Carbon Cycle and Bio-diversity Change during the Cretaceous in Asia (Journal of Asian Earth Sciences, Special Issue, 2003). Claudia holds strong research interests in Caribbean and East Asian tropical carbonates and sedimentary geology, as well as in Cretaceous, Oligocene and Pleistocene paleoceanography and paleoclimatology.

Claudia’s C.V. [PDF]

Jackson Njau, Assistant Professor

Jackson Njau

Jackson is a paleoanthropologist interested in hominid evolution and paleoenvironments of East Africa. His research integrates vertebrate taphonomy, zooarchaeology and actualistic studies to reconstruct paleolandscapes in which early hominids evolved. His recent studies include crocodile feeding behavior and its taphonomic and ecological implications for human evolution. Jackson is co-directing multidisciplinary projects in Tanzania, which provide field and laboratory opportunities to graduate and undergraduate students interested in geological sciences, vertebrate paleontology, paleoanthropology, archaeology and anthropology.

Jackson's C.V. [PDF]

P. David Polly, Professor in Geological Sciences, Adjunct Professor in Anthropology and Biological Sciences

David Polly

David is a vertebrate paleontologist interested in the evolution of mammals, the evolution of skeletal structures, functional morphology, climatic and faunal change, and the links between genetics, development, and macroevolution. He studies paleogene, neogene, and living mammals using quantitative analysis, especially geometric morphometrics.

David’s C.V. [PDF]

Erika Elswick, Senior Lecturer, Geochemistry

Erica Elswick

Research Interests: Stable isotopes in sedimentary environments (past and present), and their application to the development of sedimentary ore deposits. The fate of metals in the environment, and the development of tropical soils. Low temperature hydrothermal rock-water interactions at oceanic spreading ridges, and the influences and interactions with microbial activity and microbial byproducts associated with these rock-water interactions. Environmental changes recorded in soils associated with archaeological sites.


Lisa M. Pratt, Provost's Professor of Geological Sciences, Biogeochemistry

Lisa Pratt

Under the general theme of Earth as an analogue for Mars, I am interested in natural settings and laboratory experiments that help us understand microbial adaptations to harsh conditions and resource limitation in evaporative lakes and deep groundwater.