The Geological History of Fossil Butte National Monument and Fossil Basin

The Geological History of Fossil Butte National Monument and Fossil Basin, authored by Paul O. McGrew and published in 1975, is a scientific exploration of the geological and paleontological significance of Fossil Butte National Monument in Wyoming. The book details the stratigraphy and fossil records from the Eocene epoch, highlighting the ancient ecosystem of Fossil Lake, which existed fifty million years ago. It emphasizes the Department of the Interior's role in resource management and provides insights into the area's geologic formations, contributing to a deeper understanding of the region's environmental history.