Old Photos Revive Dinosaur Chase

On the fourth floor of the American Museum of Natural History, hiding in plain sight, there is an enormous anachronism.

Striking a proud pose in the Hall of Saurischian dinosaurs is the bulky skeleton of Apatosaurus, and trailing behind the sauropod's columnar legs is a series of deep dinosaur potholes. But Apatosaurus didn't make those tracks. While the bones of the famous herbivore are Late Jurassic in age - roundabout 150 million years old - the tracks were left behind by another dinosaur that tromped around the shores of Early Cretaceous Texas in the neighborhood of  110 million years ago.

Sauropod tracks aren't the only ones on the white slab. ...

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