Construction workers at Dinosaur National Monument made a remarkable discovery when they unearthed fossils believed to belong to the Diplodocus during a parking lot renovation.
A routine parking lot project at Dinosaur National Monument has led to an extraordinary find: dinosaur fossils uncovered for the first time in over a century. The discovery occurred in mid-September when construction workers removed asphalt near the Quarry Exhibit Hall, revealing dinosaur-bearing sandstone, according to the National Park Service.
Park staff identified the remains on September 16, prompting an immediate halt to construction activities to allow paleontologists to assess the significance of the find. The fossils are believed to belong to a large, long-necked dinosaur known as the Diplodocus, a species commonly found in the area’s historic bonebed.
Park officials reported that staff members, along with a Utah Conservation Corps crew, volunteers, and construction workers, collaborated to excavate the remains. Between mid-September and mid-October, crews successfully removed approximately 3,000 pounds of fossils and surrounding rock. The excavated material is currently being cleaned and studied at the Utah Field House of Natural History State Park Museum in Vernal, where visitors have the opportunity to observe the preparation process in the museum’s fossil lab.
This site had not been excavated since 1924, when fossil removal efforts ceased following a series of early 20th-century digs led by prominent institutions such as the Carnegie Museum, the Smithsonian National Museum of Natural History, and the University of Utah. Dinosaur National Monument was established in 1915 to protect the rich paleontological resources in the area.
Some of the newly uncovered fossils are already on display at the Quarry Exhibit Hall, often referred to as the “Wall of Bones.” This exhibit hall is the park’s most popular attraction, situated atop the original Carnegie quarry, where visitors can view approximately 1,500 dinosaur fossils still embedded in rock.
Following the excavation, crews completed the parking lot and road improvement project, which included new concrete and asphalt work, as well as accessibility upgrades around the exhibit hall. This renovation not only enhances visitor experience but also preserves the historical significance of the site.
The discovery of these fossils highlights the ongoing importance of paleontological research and conservation efforts in national parks. As more fossils are uncovered, they contribute valuable insights into the prehistoric life that once roamed the Earth.
According to the National Park Service, the excitement surrounding this find underscores the rich geological history of Dinosaur National Monument and its role in educating the public about the ancient past.