Additionally, bones and tracks don't line up exactly - the bones lack the soft tissue that was part of the foot or hand that made the print Bones found close to a tracksite are unlikely to belong to ...

"Knowing that this one individual dinosaur walked across this surface and left exactly that print is so exhilarating ... that had just three toes on each foot and traveled on its hind legs.

"I was basically clearing the clay, and I hit a hump, and I thought it's just an abnormality in the ground," he said, pointing to a ridge where some mud has been pushed up as a dinosaur's foot ...