What species of dinosaur made these scrapes, we don’t know. This is one of those cases where the rock that preserved tracks failed to preserve bones or a connection between them. We’re left with what the dinosaurs did rather than their bodies. But imagine something not unlike Albertosaurus , striding along a coastal plain. The dinosaur stops, bellows, and scratches at the ground with its great hind feet, claiming its space and showing off for whoever of its species might be listening. It’s just a small moment of Cretaceous time, but one that has survived tens of millions of years so that we might wonder over it.