At Tell es-Sawwan, evidence of irrigation—including flax—establishes the presence of a prosperous settled culture with a highly organized social structure. The culture is primarily known for its finely made pottery decorated with stylized animals, including birds, and geometric designs on dark backgrounds. This widely exported type of pottery, one of the first widespread, relatively uniform pottery styles in the Ancient Near East, was first recognized at Samarra. The Samarran Culture was the precursor to the Mesopotamian culture of the Ubaid period.
