This is a beautiful sheet of 4 stamps, issued by St. Thomas & Principe in 2010, displaying dinosaurs. Featured animals shown are the Psittacosaurus, Dsungaripterus, Pteranodon Ingens, Quetzalcoatlus, Troodon, Stegosaurus, Pteranodon, and the Euoplocephalus. The sheet is Post Office fresh, mint never hinged, and F/VF.