Scientists uncover T. rex's ancient path — and say more giant footprints remain buried

Tyler Lyson, curator at the Denver Museum of Nature & Science, told Fox News Digital how a volunteer discovered what researchers believe is the first-ever adult T. rex trackway in North Dakota.

Tyler Lyson, curator at the Denver Museum of Nature & Science, told Fox News Digital how researchers discovered the first known adult T. rex trackway in North Dakota and why the find is so rare.