North West of Iran with its appropriate climate condition and neighborhood with Anatolia, Mesopotamia, and Naxcevan, had a particular importance in archeology of different prehistoric and historical periods. The little Zab basin is located in the south part of Urmia Lake. The little Zab River rises from the mountains Piranshehr and flows from the northwest to the southeast direction to join Iraq from Alan pass. The Haji Omran and Kel-e-Shin pass in west connects this region to the north of Mesopotamia. Urmia Lake Basin is not favorable conditions until seventh millennium B.C. changes that occur after that, will provide the possibility of the first Neolithic settlement such as Hajji Firuz and Jolbar. In the other side of Zagros in upper Mesopotamia reported early settlements but in northwestern Iran can be found the same site is doubtful. Based on Hasanlu research project in Ushnu- Solduz valley, there is a gap between Hajji Firuz and Dalma, Hasanlu VIII/Pisdeli and Hasanlu VII, wich can be linked to Early Trans-Caucasian II-III in the north Urmia Lake basin. At the end of the Pisdeli period, there is an abandonment of the many small sites in Ushnu-Solduz valley. According to new research, possible to say that this gap is not seen or it is less evident in the little Zab basin. In recent archaeological studies in Little Zab basin, Beveled-rim bowl pottery was found in five sites in the Zab basin. This pottery is not seen in the northwest of Iran yet. Beveled-rim bowls for the first time appeared in southern Mesopotamia in the early fourth millennium and by the mid-fourth millennium in the surrounding regions, declining to extinction by 3000 BC. Their trajectory coincides with the Uruk period. Based on evidences it can be proposed that after Pisdeli period, Uruk culture is continuity, which is contemporary with northern Mesopotamia. Now, if based on prehistoric chronology of Sulduz plain and the south of Urmia Lake basin, we consider for Dalma Culture a history about 4
