Devonian ping
Lived on a farm in Ohio when I was little. The creek was layers of flat rock. You could walk along and see/walk in human tracks that were right beside horse and dog tracks. A little farther, where the rock had worn down to another layer, dinosaur tracks. There were all kinds. One that I remember in particular looked like old time tractor tire tracks—kind of an offset v shape. They were big and deep, each half of the v prob 8-10 inches long and 2-3 deep. Great fun for a youngster to “duck walk” in!