Velociraptor - Introducing Dinosaurs Author:Susan Heinrichs Gray What can scientists learn from an ancient fossil of two dinosaurs locked in battle? Plenty! One of those dinosaurs was a Velociraptor, a "quick thief" and predator of the Cretaceous period. Like the scientists who study Velociraptor, young readers will discover how much eighty-million-year-old bones still have to say!