Dinosaur National Monument is located on the southeast flank of the Uinta Mountains on the border between Colorado and Utah at the confluence of the Green and Yampa rivers. Although most of the monument area is in Moffat County, Colorado, the Dinosaur Quarry is located in Utah, north of the town of Jensen, Utah. The nearest Colorado town is Dinosaur while the nearest city is Vernal, Utah. The park contains over 800 paleontological sites and has fossils of dinosaurs including Allosaurus, Deinonychus, Abydosaurus, and various sauropods. The Abydosaurus consists of a nearly complete skull, the lower jaw, and first four neck vertebrae.
There are two main attractions in the park; the dinosaur fossils.
and the confluence of the Green and Yampa Rivers.