Archaeologist Glenn Schwartz (IMAGE) Johns Hopkins University Caption Johns Hopkins University archaeologist Glenn Schwartz excavating equid skeletons at the tomb complex at Umm el-Marra in Syria. Credit Johns Hopkins University Usage Restrictions None 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.