If the Jurassic  Period was all about dinosaur quality, the Cretaceous Period is all about  dinosaur quanti-ty! More dinosaurs roam the Earth than ever before! As the landmasses split apart, new species begin to spread, inhabiting the new ecological niches formed from the shifting--niches that Rain, Stone, Emily and the lost-in-time Dinosaur Explorers are itching to check out! Join our heroes as they survey this brave new world forming, with all its charms and scary dinosaurs!