美国经验：恐龙化石战争 American Experience: Dinosaur Wars (2011)认领

　　From PBS and American Experience - In the summer of 1868, paleontologist Othniel Charles Marsh boarded a Union Pacific train for a sightseeing excursion through the heart of the newly opened American West. While most passengers simply saw magnificent landscapes, Marsh soon realized he was traveling through the greatest dinosaur burial ground of all time.