1 of 13 View Caption

Trent Nelson | The Salt Lake Tribune The femur of a diplodocus on display in the new Dinosaur National Monument Visitors Center Trent Nelson | The Salt Lake Tribune The Horsfall family, on vacation from Australia, hiking the Fossil Discovery Trail at Dinos Trent Nelson | The Salt Lake Tribune The Horsfall family, on vacation from Australia, look at fossils in the Morrison Formation Trent Nelson | The Salt Lake Tribune The skull of an allosaurus on display in the quarry building at Dinosaur National Monument, Trent Nelson | The Salt Lake Tribune Paleontologist Dan Chure in the quarry building at Dinosaur National Monument, Utah, Wednes Trent Nelson | The Salt Lake Tribune Dinosaur bones protrude from the stone in the quarry building at Dinosaur National Monument Trent Nelson | The Salt Lake Tribune Dinosaur bones protrude from the stone in the quarry building at Dinosaur National Monument Trent Nelson | The Salt Lake Tribune Dinosaur bones protrude from the stone in the quarry building at Dinosaur National Monument Trent Nelson | The Salt Lake Tribune Dinosaur bones protrude from the stone in the quarry building at Dinosaur National Monument Trent Nelson | The Salt Lake Tribune A display on the allosaurus in the quarry building at Dinosaur National Monument, Utah, Wed Trent Nelson | The Salt Lake Tribune The quarry building at Dinosaur National Monument, Utah, Wednesday, September 28, 2011. The Trent Nelson | The Salt Lake Tribune Dinosaur bones protrude from the stone in the quarry building at Dinosaur National Monument Trent Nelson | The Salt Lake Tribune Dinosaur bones protrude from the stone in the quarry building at Dinosaur National Monument