A remarkable fossil discovery in North Dakota has given scientists something they have never had before: a sequence of footprints believed to have been left by an adult Tyrannosaurus rex. For decades, paleontologists have studied T. rex bones and isolated footprints to understand the world's most famous dinosaur. Now, researchers have discovered what appears to be the first known trackway made by an adult T. rex, providing a rare glimpse into how the giant predator actually moved across the landscape....Click for full post