Dr. Clifford L. Burdick, Arizona Geologist, with a set of petrified tracks left in the Paluxy River bed in Texas by a dinosaur and a human of formidable dimensions. The human footprints are 15 inches in length, but even though their length is extraordinary, much more significant is the fact that they were found next to the dinosaur tracks. It indicates that man and the dinosaur were contemporaneous not millions of years apart, cutting the evolutionary time-scale to shreds.