In the Early Jurassic, theropod dinosaur tracks were relatively common in the Navajo Sandstone and occurred in several places around the Moab area. At this site, the tracks represent up to 10 different individual animals. The rocks containing the tracks fell from the cliffs above, splitting along the bedding plane where the tracks were preserved, and both the original tracks and the layer that filled them are present on the slabs. Larger tracks called Eubrontes show an animal just over 5.6 feet tall at the hip. Several smaller tracks on the two slabs are named Grallator, and some of the animals that left them were as small as a modern-day turkey, just 1.5 feet tall at the hip. These small animals were moving at a speed of about 3 miles per hour.