Frank DeCourten is a field geologist and researcher who has designed and led geological excursions and symposia for numerous scientific and natural history organizations, including the National Park Service and the National Association of Geoscience Teachers. Prior to his retirement in 2018, he was professor of earth science at Sierra College in California and previously served as museum curator and assistant director of the Utah Museum of Natural History. His books include Dinosaurs of Utah, The Broken Land, and The Roadside Geology of Nevada.