Evidence grows that peopling of the Americas began more than 20,000 years ago

Nature ◽  
2020 ◽  
Vol 584 (7819) ◽  
pp. 47-48
Author(s):  
Ruth Gruhn
1977 ◽  
Vol 8 (1) ◽  
pp. 128-148 ◽  
Author(s):  
Sylvia J. Hallam

Following several discussions in recent numbers of Quaternary Research on the peopling of the Americas, this paper suggests that movements into the New World should be viewed in the wider context of subsistence, technology, and movement around the western littorals of the Pacific, resulting in the colonization not of one but of two new continents by men out of Asia. Specific points which have been raised by these recent papers are reviewed in the light of Australian, Wallacian, and East Asian data.(1) The earliness of watercraft is evidenced by chronology of the human diaspora through Wallacia and Greater Australia.(2) The simplistic nomenclature of chopper-flake traditions masks considerable complexity and technological potential, revealed in detailed Antipodean studies.(3) These traditions also have great potential for adapting to differing ecological zones, evidenced within Greater Australia; and for technological and economic innovation there, through Southeast Asia, and to Japan and the north Asian littoral.(4) The history of discovery and the nature of the evidence from Australia cannot validly be used to controvert early dates in the Americas.(5) Demographic data from Australia suggest that total commitment to a rapid-spread “bowwave” model for the peopling of new continents may be unwise.


2021 ◽  
pp. 1-15
Author(s):  
Andrew D. Somerville ◽  
Isabel Casar ◽  
Joaquín Arroyo-Cabrales

Archaeological studies at Coxcatlan Cave in the Tehuacan Valley of southern Puebla, Mexico, have been instrumental to the development of the chronology for the region and for our understanding of the origins of food production in the Americas. This article refines the Preceramic chronology of the Tehuacan Valley by presenting 14 new accelerated mass spectrometry (AMS) radiocarbon ages from faunal bone samples uncovered from early depositional levels of the rock shelter. Although bones associated with the El Riego (9893–7838 cal BP), Coxcatlan (7838–6375 cal BP), and Abejas (6375–4545 cal BP) phase zones of the cave yielded ages similar to those of the previously proposed chronology for the region, bones from the Ajuereado phase zones at the base of the cave yielded surprisingly old ages that range from 33,448 to 28,279 cal BP, a time prior to the Last Glacial Maximum. Because these early ages are many thousands of years older than current models estimate for the peopling of the Americas, they require reassessments of the artifacts and ecofacts excavated from these early zones.


Antiquity ◽  
1996 ◽  
Vol 70 (268) ◽  
pp. 408-415 ◽  
Author(s):  
N. Guidon ◽  
A.-M. Pessis

In December 1993 Brazilian, European and American researchers joined forces in São Raimundo Nonato, Piauí, Brazil, to analyse the state of research on the peopling of the Americas (conference proceedings in press).


Antiquity ◽  
1996 ◽  
Vol 70 (268) ◽  
pp. 416-421 ◽  
Author(s):  
Fabio Parenti ◽  
Michel Fontugue ◽  
Claude Guérin

Recent prehistoric and palaeoanthropological debate is focusing new interest on the peopling of the Americas — an old and difficult research-case. Proponents of new sites need to submit their putative 'new and revolutionary' discoveries to a wider judgement, mainly contra sceptics and partisans of more conservative theories. Such a review is helpful, and we are grateful to our colleagues for their considered assessment of the evidence proposed in our Brazilian research. Nevertheless their view of the Pedra Furada evidence has gaps, misunderstandings and ambiguities.


PLoS ONE ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. e0227984 ◽  
Author(s):  
Wolfgang Stinnesbeck ◽  
Samuel R. Rennie ◽  
Jerónimo Avilés Olguín ◽  
Sarah R. Stinnesbeck ◽  
Silvia Gonzalez ◽  
...  

Science ◽  
2018 ◽  
Vol 362 (6419) ◽  
pp. eaav2621 ◽  
Author(s):  
J. Víctor Moreno-Mayar ◽  
Lasse Vinner ◽  
Peter de Barros Damgaard ◽  
Constanza de la Fuente ◽  
Jeffrey Chan ◽  
...  

Studies of the peopling of the Americas have focused on the timing and number of initial migrations. Less attention has been paid to the subsequent spread of people within the Americas. We sequenced 15 ancient human genomes spanning from Alaska to Patagonia; six are ≥10,000 years old (up to ~18× coverage). All are most closely related to Native Americans, including those from an Ancient Beringian individual and two morphologically distinct “Paleoamericans.” We found evidence of rapid dispersal and early diversification that included previously unknown groups as people moved south. This resulted in multiple independent, geographically uneven migrations, including one that provides clues of a Late Pleistocene Australasian genetic signal, as well as a later Mesoamerican-related expansion. These led to complex and dynamic population histories from North to South America.


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