The innumerable impressions at St. George are a challenge to paleontologists. Rarely can a track, a set of footprints, be positively linked to a certain dinosaur. Tracks are therefore given names themselves. At SGDS at least five track types have been tentatively identified. We’ll look at them now. Don’t be put off by the Greek and Latin to follow. Just remember that tracks have their names and dinosaurs have their names.
Eubrontes: Meaning “true thunder”, these are large tracks that have left impressive casts at SGDS. Some you can touch, in display boxes that are clearly marked. Eubrontes tracks may have been left by Dilophosaurus, a fish or small animal eating three toed dinosaur. Dilophosaurus was approximately 15 to 20 feet tall and 6 to 7 feet high at the hips. An outstanding Dilophosaurus life restoration is at the museum. The replica presents a not yet fully grown adult, bringing you face to face with a mouthful of frightening teeth.
Grallator: A much smaller theropod track than Eubrontes. Possibly made by Megapnosaurus, 3 feet high at the hips and 7 to 8 feet long. The restoration of it is a must see. Grallator impressions are the most common tracks at SGDS. A large free-standing trackway block shows 49 individual impressions, most of them Grallator. The block is against the far wall of the museum as you come in. To make clear, a trackway is a footprint pattern. It usually consists of many individual tracks, giving clues about how the animal moved or behaved. This massive sandstone piece at SGDS is the largest intact block of tracks in the world.
Granulator impressions below.
Anomoepus: Meaning “anomalous foot”, these are the rarest track at St. George. Studied opinions suggest they belong to a type of early plated dinosaur, Scutellosaurus. A fine, full sized life restoration of Scutellosaurus graces the museum floor. All the restorations or replicas at SGDS are done by skilled craftspeople, painstakingly creating a model of ancient life.