Figure (IMAGE) Flinders University Caption The skull of a pygmy rock-wallaby or nabarlek (above) and a Proserpine rock-wallaby (below). While the brain and eyes are larger in the dwarf species, they also have larger cheekbones and teeth positioned further back in the jaw. These features increase the ability to bite harder. Credit R Mitchell (Flinders University) Usage Restrictions use with this release License Original content 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.