And they found a lot of them. Traveling the Dino Expressway Tracks from five different types of dinosaurs, including plant and meat eaters, duck-billed and armored dinosaurs, were found along what appears to have been a dino expressway. The finding establishes Alaska as the premier high-latitude dinosaur region of the world, Gangloff asserts. The largest track is 18 inches long and contains three large toe impressions made by a carnivorous dinosaur, possibly a tyrannosaur. Some of the creatures had four toes, indicating they were probably armored or horned dinosaurs.
Some tracks show the pebbly texture of the animal's skin, which is extremely rare.
The biggest surprise of all is a track left by a creature that apparently had no toes. Nearly all dinosaurs, as well as most other animals, have toes and toenails, so the discovery leaves researchers scratching their heads. We're trying to figure it out. Maybe, he quips, it was the first dinosaur to learn how to use a pogo stick. A better possibility, he adds, is that it was a turtle.