Paleontology | Department of Earth Sciences

Current members of the Paleontology research group include Edward Davis, Samantha Hopkins, and Greg Retallack. Their individual research interests are summarized below.

Edward Davis

Edward Davis is interested in the evolution and development of headgear in ruminant artiodactyls, changes in macroecology over time, and conservation paleobiology. Recently, Edward has described rare specimens of a Late Miocene field cat found in eastern Oregon and ankle bone variations in two species of pronghorn antelope from the Late Miocene fossil site, Thousand Creek, in Nevada. His current work focuses on the origin and evolution of horns and antlers on bovids, cervids, and giraffids.

Samantha Hopkins

Samantha Hopkins is primarily interested in examining paleoecology in the Oligo-Miocene of Oregon through the lens of rodent biostratigraphy. Current research activities include studying the levers in arms, legs, and heads of small mammals to understand the evolution of digging behaviours in these animals and investigating Late-Miocene evolution of dogs by describing canine fossils found in southeast Oregon’s Juntura Formation.

Greg Retallack

Greg Retallack’s research is dedicated to the proposition that soils have a fossil record, like other living things. Past studies have considered the role of soils in ape and human evolution in Kenya, grassland evolution in North America, dinosaur extinction in Montana, angiosperm evolution in Kansas, Late Permian mass extinction in Antarctica, and evolution of trees and tetrapods in Pennsylvania. Current and future studies concern Cambrian explosion on land, Precambrian life on land and martian paleosols, with fieldwork in Newfoundland and Australia