Link. “It seems that the major Out-of-Africa event happened pre-100ky, the Eurasian bottleneck occurred at ~70ky and coincided with well-known adverse geo-climatic developments; some of the survivors went north Out-of-Arabia out this time, started interbreeding with Neandertals, and finally the MP/UP transition occurred post-50ka, probably first in the Levant, and followed very quickly in Russia, Central Europe, and the Mediterranean.”