First Americans arrived as 2 separate migrations, according to new genetic evidence

Eurekalert ^ | Thursday, January 8, 2009 | Cathleen Genova

[Tarpon]

After the Last Glacial Maximum some 15,000 to 17,000 years ago, one group entered North America from Beringia following the ice-free Pacific coastline, while another traversed an open land corridor between two ice sheets to arrive directly into the region east of the Rocky Mountains. (Beringia is the landmass that connected northeast Siberia to Alaska during the last ice age.) Those first Americans later gave rise to almost all modern Native American groups of North, Central, and South America, with the important exceptions of the Na-Dene and the Eskimos-Aleuts of northern North America, the researchers said.

So someone must know --- Not often you see this in print. The oceans have risen so high since, that there are no more walkins, except from the north and south.

I wonder how long before NY is buried again under ice? A fitting end for liberal mecca.

[SunkenCiv]

Thanks blam.

[SunkenCiv]

LOL!

[uglybiker]

Oh, c'mon now! You know nuthin' happened more than 6,000 years ago!

[neverdem]

BTTT!

[MetaThought]

Link ? More info ?

[SunkenCiv]

Good timing, I needed to find this.

• Mitochondrial genome analysis revises view of the initial peopling of North America

[yefragetuwrabrumuy]

Humans in the Philippines 67,000 years ago.

http://averyremoteperiodindeed.blogspot.com/2010/06/humans-in-philippines-67000-years-ago.html

In Brazil perhaps 60,000 years ago (hotly disputed)

http://www.athenapub.com/10pfurad.htm

In NA about 50,000 years ago.

http://www.sciencedaily.com/releases/2004/11/041118104010.htm

There are several twists and turns. The first is that this disputes how humans first came to the Americas over the Siberian bridge, resulting in the first major NA human population, the Clovis people. In retrospect, this has long been puzzling, because the Clovis seem to have just appeared all at once, leaving no trace either North or South of how they got there.

However, the third link, above, now points to humans in NA 50k years ago, instead of the 11.5k years ago of the Clovis.

So a very early population of humans in SA means that they would have had to migrate via a southern route. The motivation for them doing this is easy, as about 70,000 years ago there was a major ice age, which also rendered Africa very dry. South America was one of the more pleasant places to be on Earth around 60,000 years ago, in the last few thousand years of this ice age.

The occupation of the Philippines means that there were already some serious boats available. And navigating East in the Arctic ocean to South America might have been considerably easier skirting the expanded Antarctic ice sheets (just a guess).