Othniel Charles Marsh, a paleontologist, embarked on a Union Pacific train journey through the American West in 1868, but his sightseeing trip turned into a groundbreaking discovery as he uncovered the largest dinosaur burial ground in the world.
American Experience
Renowned paleontologist Othniel Charles Marsh embarked on a thrilling sightseeing adventure through the newly opened American West aboard a Union Pacific train in the summer of 1868.
