Department of Earth and Environmental Science / Drexel University / Philadelphia / Sundance Formation and the Gypsum Springs Formation / University of Pennsylvania / Philadelphia / Wyoming Jerald D. Harris Department of Earth and Environmental Science / Sundance Formation / /
Person
Kenneth J. Lacovara / Jerald D. Harris / /
ProvinceOrState
Utah / Wyoming / Pennsylvania / Montana / /
PublishedMedium
Natural History / /
Region
central Montana / northwestern North America / central Wyoming / /