Education: M.S. geology, University of Nebraska-Lincoln,
B.S. University of Nebraska-Lincoln.

Expertise: Invertebrate fossils; ancient ecology; biological stratigraphy.

Research: Late Paleozoic and Late Cretaceous stratigraphy and ancient ecology; origin, structure and classification (petrography) of carbonate rocks; changes in sediment after deposition (diagenesis); gemstones.

Please visit Rogers Agate Page at   http://csd.unl.edu/csd.html.