Urheimat
Fortescue argues that the Uralo-Siberian proto-language (or a complex of related proto-languages) may have been spoken by Mesolithic hunting and fishing people in south-central Siberia (roughly, from the upper Yenisei river to Lake Baikal) between 8000 and 6000 BC, and that the proto-languages of the derived families may have been carried northward out of this homeland in several successive waves down to about 4000 BC, leaving the Samoyedic branch of Uralic in occupation of the Urheimat thereafter.
Read more about this topic: Uralo-Siberian Languages