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.

来自 PBS 和美国经验 - 1868 年夏天，古生物学家 Othniel Charles Marsh 登上联合太平洋火车，在新开放的美国西部中心进行观光游览。虽然大多数乘客只是看到了壮丽的风景，但马什很快意识到他正在穿越有史以来最大的恐龙墓地。