When you’re out hiking, you never know what you might see. You could cross paths with lizards, tarantulas or maybe even something bigger like a javelina. More likely, you’ll also come across the tracks of these critters.

Long before the Grand Canyon formed, a primitive reptile the size of a baby alligator skittered sideways across the wet sand of an impossibly ancient coastal plain.

A Nevada geology professor says he recently identified fossilized tracks from a reptile along a popular trail in Grand Canyon National Park.

It’s time for a dinosaur update.

A few years ago, UNLV researchers were tasked with trying to figure out what kind of prehistoric animal made tracks that were fossilized in the area of Gold Butte National Monument.

A geology professor with the University of Nevada, Las Vegas discovered a set of footprints that were left behind by a reptile-like creature 310 million years ago at the Grand Canyon.

Eons ago, somewhere on Earth, a prehistoric lizard-like creature crept across a wet sandy dune next to a shallow continental sea.

About 315 million years ago — long before dinosaurs roamed the Earth — an early reptile scuttled along in a strangely sideways jaunt, leaving its tiny footprints embedded in the landscape, new research finds.

Footprints of a “lizard like-creature” 310 million years old have been unearthed in the Grand Canyon, making them potentially the oldest reptile footprints ever found.

310-million-year old footprints of a "lizard like-creature" have been unearthed in the Grand Canyon, making them potentially the oldest ever reptile footprints ever found.

What could be the oldest footprints ever, of a lizard like-creature that roamed Earth 310 million years ago have been discovered in the Grand Canyon. Made by one of the first reptiles that ever lived the prints make it look as if the creature was line dancing.

We’ve entered some profoundly unfamiliar planetary territory.

We’ve entered some profoundly unfamiliar planetary territory.