PLANET DINOSAUR brings to life monsters that are stranger and scarier than anything you've ever seen in the movies - monsters we never knew existed until a few years ago... More species of dinosaur have been discovered in the last decade than in the 200 years before that. With China less secretive, and with more knowledge about the Arctic, the Antarctic and the Sahara, palaeontologists now know that dinosaurs ruled the planet for more than 250 million years, that they spread to every corner of the globe, and that they evolved in more monstrous and bizarre ways than we could ever have imagined.