ancestors of america\s original people lived on longgone land bridge
Last Updated : GMT 08:07:15
Arab Today, arab today
Arab Today, arab today

Ancestors of America\'s original people lived on long-gone land bridge

Arab Today, arab today

Arab Today, arab today Ancestors of America\'s original people lived on long-gone land bridge

Salt Lake - UPI

Ancestors of North America's indigenous peoples paused en route from Asia, spending 10,000 years on the Bering Land Bridge, now under the sea, researchers say. Genetic and environmental evidence indicates as those ancient people migrated from Asia they spent time living in shrubby lowlands on a broad land bridge known as Berengia, which once linked Siberia and Alaska but became submerged when sea levels rose, University of Utah anthropologist Dennis O'Rourke says. O'Rourke and his colleagues John Hoffecker of the University of Colorado at Boulder and Scott Elias, a paleoecologist at the University of London, writing in the journal Science, said cumulative evidence indicates the ancestors lived on the Bering land bridge from roughly 25,000 years ago until they began moving into the Americas about 15,000 years ago once glacial ice sheets melted and migration routes opened. "Nobody disputes that the ancestors of Native American peoples came from Asia over the coast and interior of the land bridge" during an ice age called the "last glacial maximum," which lasted from 28,000 to at least 18,000 years ago, O'Rourke said. But the absence of archaeological sites and the inhospitable nature of open, treeless landscape known as tundra steppe mean "archaeologists have not given much credence to the idea there was a population that lived on the Bering land bridge for thousands of years," he said. However, he said, sediment cores from the Bering Sea and Alaskan bogs contain pollen, plant and insect fossils, suggesting the Bering land bridge was dotted with refuges where there were brushy shrubs and even trees such as spruce, birch, willow and alder. "We're putting it together with the archaeology and genetics that speak to American origins and saying, look, there was an environment with trees and shrubs that was very different than the open, grassy steppe," O'Rourke said. "It was an area where people could have had resources, lived and persisted through the last glacial maximum in Beringia." In addition, the possibility that humans inhabited the Bering land bridge in isolation for about 10,000 years "helps explain how a Native American genome [genetic blueprint] became separate from its Asian ancestor," he said.

arabstoday
arabstoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

ancestors of america\s original people lived on longgone land bridge ancestors of america\s original people lived on longgone land bridge

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

ancestors of america\s original people lived on longgone land bridge ancestors of america\s original people lived on longgone land bridge

 



Arab Today, arab today
Arab Today, arab today Jordanian woman reveals her project

GMT 00:46 2017 Saturday ,11 November

Jordanian woman reveals her project
Arab Today, arab today The Big Apple bike boom

GMT 10:47 2017 Wednesday ,22 November

The Big Apple bike boom
Arab Today, arab today Sophian Yussef reveals suitable decoration

GMT 02:56 2017 Thursday ,23 November

Sophian Yussef reveals suitable decoration
Arab Today, arab today Syria opposition meets in Riyadh

GMT 06:23 2017 Thursday ,23 November

Syria opposition meets in Riyadh
Arab Today, arab today 'Advanced' cyber attack targets Saudi Arabia

GMT 10:18 2017 Wednesday ,22 November

'Advanced' cyber attack targets Saudi Arabia
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today Australian academic's book pulled

GMT 15:20 2017 Monday ,13 November

Australian academic's book pulled
Arab Today, arab today Srebrenica women cry tears of joy

GMT 08:03 2017 Thursday ,23 November

Srebrenica women cry tears of joy
Arab Today, arab today Delhi half-marathon to go ahead

GMT 03:51 2017 Saturday ,18 November

Delhi half-marathon to go ahead
Arab Today, arab today The history of solar eclipses

GMT 05:16 2017 Sunday ,20 August

The history of solar eclipses
Arab Today, arab today 'Robo-taxis' hold promise, and perils

GMT 08:07 2017 Thursday ,23 November

'Robo-taxis' hold promise, and perils
Arab Today, arab today Honda recalls 800,000 minivans

GMT 11:43 2017 Wednesday ,22 November

Honda recalls 800,000 minivans
Arab Today, arab today Singer Jahda Wahba has unlimited ambitions

GMT 07:56 2017 Monday ,20 November

Singer Jahda Wahba has unlimited ambitions
Arab Today, arab today paObama climate envoy slams Trump's rejection

GMT 16:04 2017 Friday ,17 November

paObama climate envoy slams Trump's rejection

GMT 09:23 2017 Saturday ,18 November

Fedra happy for “Between Two Worlds” success

GMT 02:14 2017 Saturday ,18 November

May under Brexit pressure at EU reform summit

GMT 18:41 2017 Friday ,20 October

Designer Aql Faqih aspires to innovation

GMT 11:38 2017 Wednesday ,15 November

Unloved vultures fight for their survival

GMT 17:52 2017 Sunday ,03 September

Etiquette expert underlines importance of gifts

GMT 13:41 2017 Tuesday ,21 November

French choke up over proposal

GMT 00:44 2017 Monday ,20 November

Japanese regulators raid Airbnb

GMT 17:12 2017 Monday ,07 August

Al-Shawaifi reveals secrets of total solar eclipse

GMT 16:53 2017 Tuesday ,05 September

Youssra depended on colored foam
Arab Today, arab today
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube
arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday