For the first time, paleontologists have successfully reconstructed the profiles of two massive, duck-billed dinosaurs, right down to their pebbled skin and unexpected hooves. There are no organic remains, but dinosaur anatomy like skin, hooves, and spikes preserved in a sub-millimeter clay film during a process called clay templating. Paul Sereno of the University of Chicago marvels at the preserved hooves on the foot of an adult mummy of the duck-billed dinosaur Edmontosaurus annectens nicknamed “Ed Sr.”. Scene painting some 66 million years ago showing the duck-billed dinosaur as it appeared in life based on mummies discovered in east-central Wyoming which document its scaly skin and hooves. “There are so many amazing ‘firsts’ preserved in these duck-billed mummies,” said Sereno.