Significant interbreeding between Neanderthals and early modern humans had probably already occurred in Asia more than 50,000 years ago, so the dating evidence now indicates that the two populations could have been in some kind of contact with each other for up to 20,000 years, first in Asia then later in Europe.
This may support the idea that some of the changes in Neanderthal and early modern human technology after 60,000 years ago can be attributed to a process of acculturation between these two human groups.
Of course, samples from some sites did not produce dates at all, and the coverage did not extend to eastern regions such as Uzbekistan and Siberia, where Neanderthals are also known to have lived, so it is still possible Neanderthals lingered later in some areas.
But the overall pattern seems clear – the Neanderthals had largely, and perhaps entirely, vanished from their known range by 39,000 years ago.
A severe Heinrich event, characterised by cold and dry conditions, hit Europe between 39-40,000 years ago, and it remains to be seen whether that event delivered the coup de grâce to a Neanderthal population that was already low in numbers and genetic diversity, and trying to cope with economic competition from incoming groups of Homo sapiens.”
“Severe” Ice Age event could have killed off Neanderthals 39,000 years ago, say experts
Read more "“Severe” Ice Age event could have killed off Neanderthals 39,000 years ago, say experts"

