Time was on the side of dinosaur poop. Sixty-five million years ago, dino dung was disgusting. Now it is jewelery.
Over the eons, the organic matter in the dino droppings was replaced by minerals. The resulting stones, known as coprolites, can have beautiful swirls of colors when cut open, although on the outside they look pretty much like they did when fresh. Artists now create dazzling pendants and stunning watch faces from the poop of ancient animals.
Paleontologists also value fossilized dung. Unlike fossils that suggest what extinct animals looked like, coprolites provide clues about dinosaur dining habits and parasites.