Ronnie is just a normal fifth-grader trying to pass her science class's impossible quiz on the history of dinosaurs . . . until she happens upon her neighbor—Ms. Lernin—a retired paleontologist. With the assistance of Science Magic, Ronnie and Ms. Lernin travel back through time and space to experience the Mesozoic Era firsthand. They visit three important time periods in the development of the Mesozoic Era: the Triassic, the Jurassic,

When Ronnie's parents go on a business trip and leave her with Miss Lernin for the week, Ronnie is sure she's in for a big, dinosaur-size adventure. After all, her last trip with Miss Lernin involved real-life dinosaurs! So, when they end up at the aquarium's jellyfish exhibit, Ronnie is confused. Surely jellyfish aren't as cool as dinosaurs, right? Wrong! Determined to show Ronnie just how interesting prehistoric life was before the age