The Museum of the Rockies in Bozeman is home to a world famous collection of dinosaur fossils and paleontology program. Dinosaur fossils are found in Montana rocks from the Jurassic and Cretaceous periods. Dinosaur dig crew led by paleontologist and curator Jack Horner, science advisor to the Jurassic Park films, excavate fossils which are prepared and studied at the Museum in Bozeman. Some of the most famous dinosaurs in the world such as Tyrannosaurus rex, Triceratops, and Deinonychus (very similar to Velociraptor) can be seen on display.