An introductory page contains a diagram of the Mesozoic Era showing the Triassic, the Jurassic, and the Cretaceous Periods. A brief text explains that living things have been around for billions of years and the place in time for the Pteranodon. A twenty-two page story follows which personifies a female Pteranodon and takes her through a day in her life. She leaps from a cliff and soars gracefully through the air. Using her keen vision, she spots a school of fish below the surface of the water and swoops down to scoop some into her long beak. She swallows them whole.