Fossil Primate (IMAGE) Northern Illinois University Caption This fossil primate was encased within a rock and discovered after the rock was split open, yielding a skeleton and impressions of primate bones on each side of the two rock halves. (One half shown above.) Credit Xijun Ni, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing Usage Restrictions Please use credit License Licensed 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.