These books are written and illustrated by renowned pop-up book artists Robert Sabuda and Matthew Reinhart. Each book has 35 pop-ups that emerge as each page is opened, revealing the subject creatures in layered, water-colored paper sculptures. Side booklets have intricate pop-ups with text explaining the physical and behavioral characteristics that distinguish each species. 12 pages; ages 5 and up. Hardcover. 7 1/2" H x 9 1/2" W x 2" D. (1 lb.) Encyclopedia Prehistorica: Dinosaurs. Explores species such as stegosaurus, a shield-bearing dinosaur that evolved to form vertical spikes and plates on its back to deter predators.