Physiology of dinosaurs way as sauropods. The pachycephalosaurs had small heads and weak jaws and teeth, but their lack of large digestive systems suggests a different diet, possibly fruits, seeds, or young shoots, which would have been more nutritious to them than leaves. On the other hand, ornithopods such as "Hypsilophodon", "Iguanodon" and various hadrosaurs had horny beaks for snipping off vegetation and jaws and teeth that were well-adapted for chewing. The horned ceratopsians had similar mechanisms. It has often been suggested that at least some dinosaurs used swallowed stones, known as gastroliths, to aid digestion by grinding their food in muscular gizzards,
Five Go to Demon's Rocks Five Go to Demon's Rocks Five Go to Demon's Rocks is the nineteenth novel in "The Famous Five" series by Enid Blyton. It was first published in 1961. Julian, Dick and Anne are coming to Kirrin to stay for a couple of weeks with their cousin, George (Georgina by rights), but Quentin's colleague Professor Hayling and his son Tinker (and monkey Mischief) arrive first. There isn't enough room at Kirrin Cottage for everybody to stay, so Tinker suggests he and the Five go to his lighthouse at Demon's Rocks up the coast. On arrival at the lighthouse, they settle in,