“The Geological History of Fossil Butte National Monument and Fossil Basin” by Michael Casilliano and Paul O. McGrew delves into the geological wonders of Fossil Butte National Monument. Casilliano and McGrew's work offers readers a deep understanding of the prehistoric past and the fossilized remains found in this remarkable location. This book is a valuable resource for those interested in paleontology and the study of ancient ecosystems, providing insight into the scientific discoveries made in the area.