Introduces the hypsilophodon, one of the smaller ornithoscian, or bird-hipped, dinosaurs, a plant-eater believed to have been one of the fastest-running creatures ever to live on the earth.
Introduces the hypsilophodon, one of the smaller ornithoscian, or bird-hipped, dinosaurs, a plant-eater believed to have been one of the fastest-running creatures ever to live on the earth.
