Step into an underwater world in Carnegie Museum of Natural History’s Cretaceous Seaway, a unique section of the Dinosaurs in Their Time exhibition. It brings to life the Western Interior Seaway, a shallow ocean that existed in the Midwestern United States 80 million years ago. In this scene, the agile marine reptile Dolichorhynchops tries to make a meal out of the penguin-like bird Hesperornis.