How a great-grandmother helped researchers unravel a dinosaur mummy mystery

An image shows the scaly skin of a crest over the back of the juvenile duck-billed dinosaur Edmontosaurus annectens, a specimen nicknamed "Ed Jr." by researchers. The juvenile is estimated to have been about 2 years old when it died.

A paleontologist was trying to locate the site of a famous 1908 discovery when a rancher in Wyoming shared an important clue.

(Image credit: Tyler Keillor)