Near Moab in Grand County, Utah — The American Mountains (Southwest)

Prowling Predators

Photographed by James Hulse, March 31, 2025

1. Prowling Predators Marker

Inscription. Tracks of theropod dinosaurs are relatively common in the Early Jurassic rocks of the Navajo Sandstone and occur in several places around the Moab area. The tracks from this site represent up to 10 different individual animals. The rocks containing the tracks fell from the cliffs above, splitting along the bedding plane where they were preserved. Both the original tracks and the layer that filled them are present on the slabs. From these larger tracks, called Eubrontes, we can tell that the animal was just over 5.6 feet tall at the hip. There are several small tracks preserved on these two slabs as well, which are named Grallator. Some of the animals leaving them behind would have been as small as a modern-day turkey, just 1.5 feet tall at the hip. We can tell that these small animals were moving at a speed of ~3 miles per hour. How many tracks can you find?

Name of Tracks: Eubrontes and Grallator
Early-Jurassic (~190 million years ago)
Navajo Sandstone

Erected by National System of Public Lands, U.S. Department of the Interior Bureau of Land Management.

Topics. This historical marker is listed in these

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topic lists: Paleontology • Parks & Recreational Areas.

Location. 38° 32.013′ N, 109° 36.477′ W. Marker is near Moab, Utah, in Grand County. It is on Potash Road (State Road 279) 5 miles south of U.S. 191, on the right when traveling south. The marker is located at the Potash Road Dinosaur Tracks and Petroglyphs area. It is a short 10 minute hike up the canyon wall to the dinosaur tracks and petroglyphs. Touch for map. Marker is in this post office area: Moab UT 84532, United States of America. Touch for directions.

Regionally, this marker is in Canyon Country.

It is also in the American Mountain West,

on the Colorado Plateau,

and at the Four Corners.

Globally, it is in North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once New Spain

and also Mexico’s Alta California.

Other nearby markers. At least 8 other markers are within 4 miles of this marker, measured as the crow flies: Tracks and Traces (within shouting distance of this marker); Traces from an Ancient Desert Realm (about 300 feet away, measured

The Dinosaur Tracks and Prowling Predators Marker image. Click for full size.

Photographed by James Hulse, March 31, 2025

2. The Dinosaur Tracks and Prowling Predators Marker

in a direct line); Poison Spider Rock Art (about 300 feet away); Poison Spider Paleontology (about 300 feet away); Base Jumping in Moab (approx. ¾ mile away); Birthing Panel (approx. 0.8 miles away); Utah Highway 279 Rock Art Site (approx. 0.9 miles away); The Moab Skyway - High Hopes and Big Risks (approx. 3.3 miles away). Touch for a list and map of all markers in Moab.

Additional keywords. Ichnology

The dinosaur tracks on the stone image. Click for full size.

Photographed by James Hulse, March 31, 2025

3. The dinosaur tracks on the stone

Credits. This page was last revised on April 30, 2025. It was originally submitted on April 29, 2025, by James Hulse of Medina, Texas. This page has been viewed 103 times since then and 19 times this year. Photos: 1, 2, 3. submitted on April 30, 2025, by James Hulse of Medina, Texas.