The dinosaur fossils at Dinosaur National Monument were found in the Morrison Formation, a source rich in Late Jurassic dinosaur remains.
The dinosaur fossil bones found at Dinosaur National Monument were discovered within the Morrison Formation. This geological formation is renowned for being one of the most fertile sources of dinosaur fossils in North America. Deposited during the Late Jurassic period, it covers several states and has yielded numerous dinosaur skeletons. The Morrison Formation's sediments are composed primarily of silty mudstone and sandstone.
These rocks were deposited in floodplains and river channels, creating an environment that supported a variety of dinosaur life and subsequently preserved their remains.
In conclusion, when visiting Dinosaur National Monument and viewing the spectacular array of fossilized bones, one is looking at remnants from the Morrison Formation, which is a testament to the rich prehistoric life that once thrived in this region.