15,000 to 20,000 years


David wrote:
On Aug 27, 2:05 pm, Jack Linthicum <jacklinthi...@xxxxxxxxxxxxx>
wrote:
...
The "kelp highway hypothesis" first crystallized among an
interdisciplinary group working at the National Center for Ecological
Analysis and Synthesis. The study's other researchers include: Michael
Graham of Moss Landing Marine Laboratories; Bruce Bourque of Bates
College; Debbie Corbett of the U.S. Fish and Wildlife Service in
Anchorage, Alaska; James Estes of the U.S. Geological Survey and the
University of California-Santa Cruz; and, Robert Steneck of the
University of Maine.

Thanks for giving detailed, additional information.

Moving on -

50,000 -55,000 BC
https://www3.nationalgeographic.com/genographic/atlas.html

The map traces migration routes into North and South America

From that link: "... the reduced genetic diversity found in the
Americas indicates that those lineages arrived only within the last
15,000 to 20,000 years and quickly spread once there."

The Genographic Project: Principal Scientific Investigators
http://press.nationalgeographic.com/pressroom/pressReleaseFiles/11133...

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