Scientists have found a set of bones of dinosaur that are well preserved!!  There are petrified trees and freshwater clams also.  The site is located at Utah.  The fossils date back 150 million years ago.  The quarry near Hanksville is identified as a “major dinosaur fossil discovery.”  The fossils included 4 sauropods and 2 carnivorous dinosaurs.  A herbivorous stegosaurus was also found!  These dinosaurs belong to the late Jurassic period.