Beringia and the settlement of the western hemisphere


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Beringia and the settlement of the Western Hemisphere

V V Pitul'ko, John F Hoffecker, E.Y. Pavlova

March 2022


Previously, we addressed the problem of what variable(s) limited widespread human settlement of the Americas before ~15 ka. We concluded that while non-modern human taxa (e.g., Neanderthals) probably did not inhabit high-latitude environments (due to cold climate and/or low plant and animal productivity) and thus could not disperse in the Western Hemisphere via Beringia, modern humans likely were denied access to mid-latitude North America >15 ka by coastal and interior ice sheets. Here we reexamine the problem with respect to modern humans in light of a revised chronology for glaciers and sea level, new research in paleo-genomics, and some new archaeological discoveries. During 35-30 ka, a lineage with west Eurasian roots occupied the Great Arctic Plain (GAP) and may have expanded into eastern arctic Beringia and mid-latitude North America via an ice-free corridor. An East Asian lineage associated with microblade technology occupied the Lena Basin during the LGM and expanded onto the GAP >15 ka, possibly as early as the GI 2 interstadial (24-23 ka). Their immediate descendants probably occupied the southern Bering Land Bridge and NW Pacific coast >15 ka and dispersed widely in the Western Hemisphere during GI 1 (14.5-12.9 ka), primarily if not exclusively via a coastal route. Glaciers blocked the interior route >15 ka and either blocked or severely limited interior access to mid-latitude North America during the GI 1 interstadial.
So they were a mixture of Ancient North Eurasians and Devil Gates like AR19K East Asian Samples, just like all previous data has shown before? The genetic dating of the peopling of the Americas seem to be around 17,000 kya IMO. That's when NNA seems to diverge from SNA and Ancient Beringian (less successful lineage but apparently made little contribution to paleo-Eskimo/Na Dene). Aperrently Ancient Beringians got more Amur river ancestry which decreased its ANE levels compared to NNA/SNA lineages
Last update (6.11.2022) of the paper that gives rise to this thread

Beringia and the peopling of the Western Hemisphere
John F Hoffecker, Vladimir Pitulko, ...

This is a preprint, may not have been peer reviewed yet.
Sometimes ResearchGate later withdraws free access to articles when they appear in a magazine.

Comment about this paper
The Pacific coast of North America (of which the coast of Beringia was a part) is one of the main annual migration routes for birds between the American Arctic and North America or the summer of South America, Antarctica and New Zealand. As Beringia was poorly drained, would have many tundra summer species of ducks, geese and swans. The inhabitants of the coast of Beringia, seeing flocks and flocks of this family meals with wings flying to the southeast of Beringia every year, would go beyond the limits of their endurance to try to follow these birds to their destination, that had to be vast hunting grounds. Whatever was the extent of the coastal ice wall, Amerindians may have entered the Americas a little earlier than the dates when geoclimatic conditions allowed.
Dating of a large tool assemblage at the Cooper’s Ferry site (Idaho, USA) to ~15,785 cal yr B.P. extends the age of stemmed points in the Americas
23 Dec 2022

[FONT=var(--font-family-sans-serif)]《 The nearest and most comparable projectile point form in northeast Asia that predates the ~16,000–cal yr B.P. Cooper’s Ferry occupation is associated with late upper Paleolithic (LUP) bifacial point-bearing sites in Hokkaido. This LUP bifacial point tradition is preceded by a blade-point industry dating from ~32,000 to 20,000 cal yr B.P. in Hokkaido and northern Honshu. These bifacial stemmed point technologies occur [in the Japanese Archipelago] well before the appearance of different lithic and ceramic technologies associated with incipient Jomon occupations in Hokkaido (~14,700 cal yr B.P.), which may reflect the arrival of different human groups with different cultural adaptations. Dental and DNA evidence that indicate that Holocene-aged Jomon populations could not be the ancestors of the First Americans may thus be correct but is largely irrelevant. We hypothesize that this shared similarity in pre-Jomon stemmed point technology may point to the general location along the northwest Pacific Rim from which some of the earliest peoples in the Americas may have originated between ~22,000 and 16,000 years ago.》[/FONT]
hi ,i hunt meteorites ,but i believe i have found an ,neanderthal spear piont ,in a dry riverbed in californi ,i am not an expert, but i researched it and the neanderthal spear piont is the only exact match .may be proff they made it here to america ?

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