Ubaid Period (jan 1, 6500 BC – jan 1, 4100 BC)
Description:
The Ubaid period (c. 6500–3800 BC)[1] is a prehistoric period of Mesopotamia. The name derives from Tell al-'Ubaid where the earliest large excavation of Ubaid period material was conducted initially in 1919 by Henry Hall and later by Leonard Woolley.[2][3]
In South Mesopotamia the period is the earliest known period on the alluvial plain although it is likely earlier periods exist obscured under the alluvium.[4] In the south it has a very long duration between about 6500 and 3800 BC when it is replaced by the Uruk period.[5]
In Northern Mesopotamia the period runs only between about 5300 and 4300 BC.[5] It is preceded by the Halaf period and the Halaf-Ubaid Transitional period and succeeded by the Late Chalcolithic period.
https://en.wikipedia.org/wiki/Ubaid_period
Added to timeline:
Date:
jan 1, 6500 BC
jan 1, 4100 BC
~ 2401 years