Three fossilized tracks dating back 66.5 million years are headed to a Colorado museum for preservation and further study
BISMARCK, N.D. — Three massive fossilized footprints left by a Tyrannosaurus rex roughly 66.5 million years ago have been airlifted from the Little Missouri National Grasslands in western North Dakota and transported to the Denver Museum of Nature & Science.
The sandstone blocks containing the footprints were removed by helicopter earlier this month in a delicate operation designed to preserve an exceptionally rare record of a dinosaur’s movement across the ancient landscape. The U.S. Forest Service released photographs of the recovery, which involved lifting the fossil-bearing blocks from a remote site before transporting them by truck to Colorado…