Fantastic 3D Tri-Ceratops Styracosaurus Pachyrhinosaurus Dinosaurs Bookmark. All three of these dinosaurs lived in North America during the Cretaceous period. Artgame manufactures the highest quality eye-popping 3D lenticular products on the market. No 3D glasses required! Each item features the artwork of renowned artist, Royce B. McClure. Check out all of the amazing designs to start your own collection! Each bookmark comes with a tassle. Tassle colours may vary. View More...