Posted on 01/09/2009 7:12:43 AM PST by Red Badger
The first people to arrive in America traveled as at least two separate groups to arrive in their new home at about the same time, according to new genetic evidence published online on January 8th in Current Biology, a Cell Press publication.
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.
" Recent data based on archeological evidence and environmental records suggest that humans entered the Americas from Beringia as early as 15,000 years ago, and the dispersal occurred along the deglaciated Pacific coastline," said Antonio Torroni of Università di Pavia, Italy. "Our study now reveals a novel alternative scenario: Two almost concomitant paths of migration, both from Beringia about 15,000 to 17,000 years ago, led to the dispersal of Paleo-Indiansthe first Americans."
Such a dual origin for Paleo-Indians has major implications for all disciplines involved in Native American studies, he said. For instance, it implies that there is no compelling reason to presume that a single language family was carried along with the first migrants.
When Columbus reached the Americas in 1492, Native American occupation stretched from the Bering Strait to Tierra del Fuego, Torroni explained. Those native populations encompassed extraordinary linguistic and cultural diversity, which has fueled extensive debate among experts over their interrelationships and origins.
Recently, molecular genetics, together with archaeology and linguistics, has begun to provide some insights. In the new study, Ugo Perego and Alessandro Achilli of Torroni's team analyzed mitochondrial DNA from two rare haplogroups, meaning mitochondrial types that share a common maternal ancestor. Mitochondria are cellular components with their own DNA that allow scientists to trace ancestry and migration because they are passed on directly from mother to child over generations.
Their results show that the haplogroup called D4h3 spread from Beringia into the Americas along the Pacific coastal route, rapidly reaching Tierra del Fuego. The other haplogroup, X2a, spread at about the same time through the ice-free corridor between the Laurentide and Cordilleran Ice Sheets and remained restricted to North America.
"A dual origin for the first Americans is a striking novelty from the genetic point of view and makes plausible a scenario positing that within a rather short period of time, there may have been several entries into the Americas from a dynamically changing Beringian source," the researchers concluded.
via Louisiana?
Espera DeCorti, aka "Iron Eyes Cody"
they were all over north America, I assume some of them made it further south were the meteor strike spared some...
The Clovis people were all over North America, since their arrowheads have been found from the Carolinas to Mexico. But they disappeared from the archaeological records suddenly all over the place. The devastation from the meteor strike must have been huge and widespread. No animals and no vegetation left, so they starved if they survived the initial destruction.............
LOL
“What?? They didnt come from Judea?”
They were The People’s Front of Judea.
From Europe via Siberia. Got it. ;-)
That east of the Rockies thing covers a lot of ground and possibilities but Europe sound right. Although, I’ve never heard of any aboriginal named Olaf Running Bear.
No, not via Siberia, via north Atlantic and Greenland. There was a huge ice sheet that covered the entire Arctic ocean, so you could theoretically walk from Europe directly to North America............
I'm shocked, shocked I tell you.
Native American legends contend they were always here.
Whose to say they weren't?
Or whose to say the migrations went “left to right” and not “right to left”?
I thought there was evidence of habitation much older than 15-17,000 years...
The latest theory that I think is possible is the “euro” people hunted and fished along the edge of the great ice sheet and eventually would up along the North American east coast, while later the “asian” people came across the Bering land bridge. Some may even have come by boats across from Polynesia to South American west coast..............
Why?
The genetic evidence.
Carbon dating showss humans and primitive humans existing in Africa and Eurasia for well over a million years. No such humans have been found in America before the late ice age.
If only they'd spent their defense research budget on a meteor shield instead of Folsom points.... >sigh<
One big asteroid is all it takes...
|
|||
Gods |
Thanks Red Badger for topic and ping, and thanks decimon for the link. |
||
· Discover · Nat Geographic · Texas AM Anthro News · Yahoo Anthro & Archaeo · · The Archaeology Channel · Excerpt, or Link only? · cgk's list of ping lists · |
I’ll have to dig out a book I read some years ago to refresh my memory. It’s in the storage shed, several layers deep.
Most all of the world’s religions that believe in any form of deity have major similarities. The Hopi aren’t like any of those. They seem to know some spiritual stuff that escapes other cultures. According to this book, their history starts when they came to Earth. Also according to this book, they have knowledge of alien civilizations.
I’ve been meaning to try to read up on them, to get to the bottom of the impressions left me by that book, but I haven’t had time of late.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.