Micah Parsons and the Dallas Cowboys pass rush could get a much-needed boost from a former NFL Defensive Player of the Year ...

The chances of these prehistoric mysteries ever being solved are slim to none. Welcome to WatchMojo, and today we’re counting down enduring mysteries from the mists of prehistory.

Edge rusher Jared Allen is known as a Vikings or Chiefs sack artist but spent 18 games with the Bears before his career ended, and now he's headed for Canton.