1.9 Million-year-old Early Human Skull (image) New York University Caption Left: Dr. Richard Leakey's reconstruction shows an erroneous vertical facial profile on a 1.9 million-year-old early human skull. Right: Dr. Timothy Bromage's computer-simulated reconstruction shows the same skull with a distinctly protruding jaw. Dr. Bromage used the green and red lines to compare the location of the eyes, ears, and mouth, which must be in precise relationship to one another in all mammals. Credit Dr. Timothy Bromage Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.