Tell Brak
The earliest period A, is dated to the proto Halaf culture c. 6500 BC, when a small settlement existed. Many objects dated to that period were discovered including the Halaf pottery. By 5000 BC, Halaf culture transformed into Northern Ubaid, and many Ubaid materials were found in Tell Brak. Excavations and surface survey of the site and its surroundings, unearthed a large platform of patzen bricks that dates to late Ubaid, and revealed that Tell Brak developed as an urban center slightly earlier than better known cities of southern Mesopotamia, such as Uruk.