Thursday, May 11, 2017

Beringia, The Last 140,000 Years

Marnie Dunsmore
5/11/2017

Note:  The bison symbols below indicate when bison crossed Beringia into North America (according to the recent paper in PNAS "Fossil and genomic evidence constrains the timing of bison arrival in North America", Froese et al, referenced below.)

5,000 years ago


















10,000 years ago


















12,000 years ago


















15,000 Years Ago


















20,000 Years Ago


















25,000 Years Ago


















30,000 Years Ago


















35,000 Years Ago


















Tolbaga, south of Lake Baikal, Siberia, probably about 35,000 years old.
(Link)

40,000 Years Ago


















42,000 Years Ago


















45,000 Years Ago


















Ust'-Ishim, 45,000 years ago in Siberia
(Link)

50,000 Years Ago


















52,500 Years Ago


















55,000 Years Ago


















60,000 Years Ago


















65,000 Years Ago


















70,000 years ago


















75,000 years ago


















80,000 years ago


















85,000 years ago


















90,000 years ago


















95,000 years ago


















100,000 years ago


















105,000 year ago


















110,000 years ago


















115,000 years ago


















120,000 years ago


















125,000 years ago


















130,000 years ago


















135,000 years ago


















140,000 years ago


















References

Similar Meltwater Contributions to Glacial Sea Level Changes from Antarctic and Northern Ice Sheets
Eelco J. Rohling, Robert Marsh, Neil C. Wells, Mark Siddall & Neil R. Edwards
Nature 430, 1016-1021(26 August 2004)
(Link)

Sea Level and Global Ice Volumes From the Last Glacial Maximum to the Holocene
Kurt Lambeck, Hélène Rouby, Anthony Purcell, Yiying Sun, Malcolm Sambridge
PNAS
vol. 111 no. 43
October 28th, 2014
(Link)

A Chronology of Paleozoic Sea-Level Changes
Haq, B. U.; Schutter, SR
Science
322 (5898): 64-8
2008

Fossil and genomic evidence constrains the timing of bison arrival in North America
Froese et al
PNAS, February 3, 2017.

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