The Late Pleistocene Dispersal of Modern Humans in the Americas

  title={The Late Pleistocene Dispersal of Modern Humans in the Americas},
  author={Ted Goebel and Michael R. Waters and Dennis H. O’Rourke},
  pages={1497 - 1502}
When did humans colonize the Americas? From where did they come and what routes did they take? These questions have gripped scientists for decades, but until recently answers have proven difficult to find. Current genetic evidence implies dispersal from a single Siberian population toward the Bering Land Bridge no earlier than about 30,000 years ago (and possibly after 22,000 years ago), then migration from Beringia to the Americas sometime after 16,500 years ago. The archaeological records of… 

Late Pleistocene exploration and settlement of the Americas by modern humans

Genetic studies have conclusively shown that the first Americans were the result of ancestral east Asian and northern Eurasian admixture, and these genetic results agree with the emerging late Pleistocene archaeological record.

Early Asiatic Migration to the Americas: A View from South America

During last three decades, American archaeology has generated a large body of information, which has fuelled debate on the early peopling of the New World. This has allowed scientists to propose and

Ancient DNA: Muddy messages about American migration

A series of environmental reconstructions based on coring of lake sediments in what was once the ice-free corridor between Siberia and Laurentide indicate that the corridor would have still been inhospitable even after humans are known to have arrived in the Americas south of the ice.

Setting the Stage: The Late Pleistocene Colonization of North America

The timing of human entrance into North America has been a topic of debate that dates back to the late 19th century. Central to the modern discussion is not whether late Pleistocene-age populations

Human Remains Directly Dated to the Pleistocene- Holocene Transition Support a Marine Diet for Early Settlers of the Pacific Coast of Chile

ABSTRACT A coastal route for the initial peopling of the Americas has been debated for over 30 years. Nevertheless, evidence supporting this coastal dispersal is often elusive, especially

Human Evolution Out of Africa: The Role of Refugia and Climate Change

Data from ancient genomes of Neandertals and Denisovans coupled with improved understanding of the role of refugia in driving evolution during the Ice Ages suggest that such refugias were important in the pace and pattern of change.

Contradictions and Concordances in American Colonization Models

The traditional view of American colonization during the late Pleistocene has largely been conditioned on early conceptions of the timing and extent of continental glaciations and the age and

Contradictions and Concordances in American Colonization Models

  • D. O’Rourke
  • Environmental Science
    Evolution: Education and Outreach
  • 2011
Accumulating molecular genetic data raises new questions about the timing and population size of the initial colonization of the Americas, while a closer examination of glacial models suggests that a number of routes into the Americas may have been available until fairly late in the last glacial cycle.



The Archaeology of Ushki Lake, Kamchatka, and the Pleistocene Peopling of the Americas

New radiocarbon dates indicate that human occupation of Ushki began only 13,000 calendar years ago, suggesting that late-glacial Siberians did not spread into Beringia until the end of the Pleistocene, perhaps too recently to have been ancestral to proposed pre-Clovis populations in the Americas.

The Settlement of the American Continents: A Multidisciplinary Approach to Human Biogeography

When many scholars are asked about early human settlement in the Americas, they might point to a handful of archaeological sites as evidence. Yet the process was not a simple one, and today there is

Human presence in the European Arctic nearly 40,000 years ago

The discovery of traces of human occupation nearly 40,000 years old at Mamontovaya Kurya, a Palaeolithic site situated in the European part of the Russian Arctic implies that either the Neanderthals expanded much further north than previously thought or that modern humans were present in the Arctic only a few thousand years after their first appearance in Europe.

Global archaeological evidence for proboscidean overkill

This report test the overkill and climate-change hypotheses by using global archaeological spatiotemporal patterning in proboscidean kill/scavenge sites to suggest that prehistoric human range expansion resulted in localized extinction events.

Mitochondrial DNA and Y chromosome diversity and the peopling of the Americas: Evolutionary and demographic evidence

  • T. SchurrS. Sherry
  • Biology
    American journal of human biology : the official journal of the Human Biology Council
  • 2004
A second expansion that perhaps coincided with the opening of the ice‐free corridor probably brought mtDNA haplogroup X and NRY haplogroups P‐M45b, C‐M130, and R1a1‐M17 to North and Central America.

Genetic analysis of early holocene skeletal remains from Alaska and its implications for the settlement of the Americas.

This individual's mitochondrial DNA represents the founder haplotype of an additional subhaplogroup of haplogroup D that was brought to the Americas, demonstrating that widely held assumptions about the genetic composition of the earliest Americans are incorrect.

The North Atlantic ice-edge corridor: A possible Palaeolithic route to the New World

The early peopling of the New World has been a topic of intense research since the early twentieth century. We contend that the exclusive focus of research on a Beringian entry point has not been

The Peopling of the New World: Present Evidence, New Theories, and Future Directions

The prevailing archaeological consensus on Paleoindian origins and colonization of the Americas has been shaken by recent wide acknowledgment of pre-Clovis occupation at Monte Verde, Chile, and by