Humans in the Americas 30,000 years ago?

[J.C.MacSwell]

 

"A team of European archaeologists uncovered evidence that humans may have been in the Americas for twice as long as previously believed"

https://www.theweathernetwork.com/ca/news/article/artifacts-may-have-unearthed-new-timeline-of-human-arrival-in-the-americas

Source article: https://www.dailymail.co.uk/sciencetech/article-8548977/First-humans-reached-Americas-15-000-years-EARLIER-thought.html

• Cave in Mexico found with evidence of humans living there 27,000 years ago 
• Modelling reveals humans arrived on the continent around 33,000 years ago 
• Researchers do not know exactly how people first reached Americas at this time 
• Believe they either used the land bridge between North-east Asia and Alaska or sailed along the coastline from modern-day Russia to the new continent 

[gravitymall]

Is it possible  to determine this through genetic divergence of native americans and east asians? 

[Strange]

2 hours ago, gravitymall said:

Is it possible  to determine this through genetic divergence of native americans and east asians? 

Yes.

For example: https://www.sciencemag.org/news/2018/11/ancient-dna-confirms-native-americans-deep-roots-north-and-south-america

More here: https://scholar.google.com/scholar?q=genetic+analysis+"native+american"+origins

[joigus]

Pre-Clovis artifacts have been popping up for quite a while. Very interesting topic. +1

There's even a hypothesis whose main proponent is Dennis Stanford, from Smithsonian, that puts forward the idea that some Solutreans populated parts of the Americas following the track of seals across the North Atlantic. The last thing I've read is that DNA analysis has shown that no relevant traces of proto-European DNA have been found in native Americans of non-mixed descent. But there's more information on the Wikipedia article.

[gravitymall]

Very interesting

[MigL]

As the last glaciation epoch lasted from about 115 000 to 12 000 years ago, and the maximum ice extent was about 22 000 years ago, I can readily see people crossing over the ice/land bridge between Siberia and Alaska 30 000 years ago.
Homo Sapiens was already in Northern Europe 45 000 years ago.
I guess we got around.

[Ken Fabian]

More than one wave of migration seems possible, even likely. That every wave was successful and thrived... maybe not. I recall reading about New Zealand, that the Polynesians that settled there, that modern Maori know as ancestors, found people already there, from prior visits. Hawaii likewise. Those people were not thriving and had lost their sea going capabilities. Possibly marooned? Certainly supplanted by later arrivals, possibly violently.