The Connecticut Valley has extensive fossil discoveries. Some of these fossils date to the Jurassic Period. Many specimens uncovered in brownstone quarries during the 1800s are included into the collections of museums throughout the world. History was made 1966 when hundreds of dinosaur tracks were exposed in Rocky Hill.[1] The dinosaur tracks in Rocky Hill were discovered by a bulldozer operator who was excavating for a new state building. The site became Dinosaur State Park, which became a Registered National Landmark in 1968