Saurischia Dinosaur Tracks

These tracks were made by a three-toed dinosaur known as a Saurischia therapod. It lived here about 170 million years ago during the Jurassic era when the environment was tropical. The footprints are raised natural sandstone castings of the original dinosaur tracks. After the dinosaur walked through sandy mud, its dried tracks were filled by more mud which eventually hardened into rock of the Kayenta formation. Later, the Kayenta layer tilted and spalled revealing the castings as well as the molds whose slab was too massive to remove.

On loan from Glen Canyon National Recreation Area

Marker is at the intersection of Lake Powell Boulevard and Navajo Drive, on the right when traveling north on Lake Powell Boulevard.

Courtesy hmdb.org

Credits and Sources:

HMDB