ROBERT SABUDA is the co-creator of the first book in this series, ENCYCLOPEDIA PREHISTORICA: DINOSAURS. And he is the force behind many stunning best-selling pop-up books, including America the Beautiful, Alice in Wonderland, The Wonderful Wizard of Oz, and Winter's Tale: An Original Pop-up Journey. MATTHEW REINHART is the co-creator of ENCYCLOPEDIA PREHISTORICA: DINOSAURS. And he has created many other award-winning pop-up books, including the Young Naturalist's series, The Ark, Animal Opposites, and Cinderella: A Pop-Up Fairy Tale.