National Museum of Natural History
10th Street and Constitution Avenue, NW
2nd Floor, West Floor Plan
At the end of the Cretaceous period 66 million years ago, the last dinosaurs roamed what is now the Western Interior of North America. Then, global catastrophe—in the form of a massive asteroid—ended their reign. All dinosaurs (except birds) disappeared forever.
Take a walk through time to explore our scientists' findings and answers to the questions that help us understand America's last dinosaurs, their lives, and their ultimate demise.