Presents known and hypothesized information about the dinosaur Pachycephalosaurus, including its discovery, physical appearance, and lifestyle.

Describes what is known about the plant-eating dinosuar, Pachycephalosaurus. Includes physical characteristics, environments, its predators, and how we know so much about them.

"Engaging images accompany information about the pachycephalosaurus. The combination of high-interest subject matter and light text is intended for students in grades 2 through 7"--Provided by publisher.