If the Jurassic Period was all about dinosaur quality, the Cretaceous Period is all about dinosaur quantity! 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!