Long Term Settlement Stratigraphy at the Site of Tasbas (image) Washington University in St. Louis Share Print E-Mail Caption This is a photo of the long-term settlement stratigraphy at the site of Tasbas. Mudbrick/clay oven (visible on right lower portion) contained earliest evidence for grain farming. Credit Paula Doumani /Washington University in St. Louis (2011) Usage Restrictions None Share Print E-Mail 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.