Triceratops lived around 68 to 65 million years ago in what is now North America. It was one of the last dinosaur genera to appear before the extinction event.
These pictures only cover a small portion of the Museum of Natural History. There is also a large display of stuffed animals in The Kenneth E. Behring Family Hall of Mammals. The Hope Diamond was also on display, along with many other things. Since we were in a hurry to do all our DC sightseeing in one day, we didn't get to linger. We came, we took pictures, we left all in an hour or two. But it was awesome!