When dinosaur fossils were first discovered in the Wild West, they sparked one of the greatest scientific battles in American history. Over the past century it has been known by many names—the Bone War, the Fossil Feud—but the tragic story of the competition for fame and natural treasure between Edward Drinker Cope and Othniel Charles Marsh, two leading paleontologists of the Gilded Age, remains prophetic of the conquest of the West as well as a watershed event in science. With a historian's eye and a novelist's skill, David Rains Wallace charts in fascinating detail the unrestrained rivalry between Cope and Marsh and their obsession to become the first to make available to the world the abundant, unknown fossils of the western badlands. This story will surely fascinate anyone who has had to confront the myriad facets of professional jealousy, its sterile brooding, and how it leads to an emotional abyss.