When Javier Cabrera Darquea was given an Inca Burial Stone as a paperweight on his birthday, he rembered his father owning a similare craving stones. He tried to find the origin of his gift, he discovered that that Inca buried these stoes with their dead and built a collection of 11,000 of these stone. One third of these carvings showspecific types of dinosaurs, plesiosaurs, and pterosaurs. These include Triceratops, Stegosaurus, Plesiosaurs, Tyrannosaurs, Sauropods, and various types of pterosaurs. In fact one sows a man riding a Tricerotops, showing possible dinosaur domestcation