Paleobiology of the late Cenozoic amphibians, reptiles, and mammals. Current projects
focus on late Pleistocene extinctions, biogeography, cave paleontology, paleoecology
Executive Director, Don Sundquist Center of Excellence in Paleontology (ETSU); Adjunct
professor Department of Biological Sciences (ETSU); Research Associate, Museo de la
Plata, Argentina; Society of Vertebrate Paleontology; National Speleological Society;
Southeastern Cave Conservancy; Tennessee Cave Survey; Tennessee Herpetological Society.