Suggestions regarding the migrations
of the Native Americans
Beringia is the name given to the land that once existed between
Siberia and Alaska during the last ice age, when the sea levels
were considerably lower than today. It was likely, for the most
part, a shrub tundra, with some forest in the south. It was home
to a great variety of Arctic mammals, including the megatherians.
Sometime between 30,000 bc and 10,000 bc, people moved north and
east from Siberia and northern China into Beringia. I suggest that
there were two groups:
One stayed closer to the coast and was more dependent on sea and
river food sources and had a fairly sophisticated use of boats and
had more of the technology common to China, including microblades
and fishing paraphenalia.
The other was further north in the interior (the mammoth steppes),
and had technologies more similar to that in western Eurasia. It
is possible that they were the originators of the Clovis
technology. They were a much smaller population and would enter
North America later.
The entry from Asia into Beringia became increasingly difficult
during the ice age and blocked additional peoples from entering.
The two cultures, however, were well adapted and continued to
thrive. They remained in Beringia at least 5000 years and possibly
a great deal longer.
Circa 17,000 bc, as the glacial ice began to retreat, the coastal
people began moving south along the Pacific coast, and did so
quite rapidly. One branch turned east towards Texas and the Gulf
shores of Mexico. The other branch continued down the Pacific
coast to South America and all the way to Chile. Later, they would
expand east from the coast into the Amazon basin, commonly along
river routes. Others would follow the Atlantic route into eastern
Most of what Greenberg referred to as the Amerind languages,
especially in Mexico, Central America, the Caribbean Islands, and
South America, as well as southern and western United States,
likely descend from these people.
Circa 15,000 bc, an ice-free corridor opened east of the
Rockies, between the Laurentide and Cordilleran ice sheets. The
interior people discovered the corridor and would follow the large
game animals south and east towards the North American plains.
Later, they would enter the eastern woodlands, as well as begin to
encounter and mix with the coastal people of the southern plains
and Gulf coast.
The Algonquian-speaking people are the most likely descendents of
these people. The Siouan and Iroquois people (whom Greenberg
included with the Algonquians as the Almosan–Keresiouan language
family) might also be descendents.
The third group to enter North America were the ancestors of the
Na-Dene people. Probably originating in the Yenesei/Baikal area,
they crossed the Bering strait and moved into Alaska circa 8,000
bc. Later, they expaned eastward into Alberta and southward along
the British Columbia coast. Their languages may be related to the
Yeniseian languages of central Siberia, of which only Ket
The fourth group were the ancestors of the Inuits and Aleuts, who
probably originated in the Chukotka area, entered Alaska and
expanded rapidly across the Arctic coast, eventually ending in
Greenland. The first expansion began around 3500 bc
(Paleo-Eskimo), and a second one around 1000 ad (the Thule
culture), both starting in Alaska. There are still representatives
of the Inuit-Aleuts in the Chukchi Peninsula. It has been
suggested that their languages are distantly related to the Uralic
The coastal people contributed the most to the genetics of the
native American people. Most are in the Q yDNA haplogroup, mostly
Q-M3, about 77% in North America and 83% in South America. mtDNA
is more varied, but consists primarily of A2, B2, C1, and D1. A is
common throughout Asia, with A2 most common in Chukotko-Kamchatka
(far-eastern Siberia); B is also common, but the subclade most
similar to American B2 is found primarily in South China, Taiwan,
and the Philippines; C is found in Siberia, especially among the
Yukaghirs and Nganasans; and D is found throughout Asia,
especially among the Japanese, Korean, Mongol and Tungus
populations. Most Native Americans are blood type O.
Although there is much overlap with the genetics of the coastal
people, the descendents of the interior people have some
differences as well. Many of them are in the R1 yDNA haplogroup,
with the Ojibwe as high as 79%. Some tribes of Na-Dene people also
have as much as 50% R1, as do the Muskogean Seminoles and the
Iroquoian Cherokee. The mtDNA includes most of the coastal
haplogroups, but among the Algonquian tribes as much as 25% carry
the X2a haplotype. Finally, eastern woodland tribes are more
likely than others to be blood type A, albeit not as likely as the
Na-Dene or Aleut-Inuit.
Because Q yDNA and A, B, C, and D mtDNA are also found in much of
eastern and northern Asia (and are by far the most common among
native Americans), while R yDNA and X mtDNA are more common in
western Eurasia, some have hypothesized that the people of the
eastern woodlands descend from Europeans of the Solutrean culture
who managed to cross the Atlantic at about the same time as the
Beringians entered the Americas. This is supported by the
similarity of the Clovis technology to the Solutrean. However,
this is not taken seriously by the majority of experts, who
believe that the X mtDNA may have more easily derived from central
Siberia, and the R yDNA is more likely from European admixture.
Roughly half of the Na-Dene carry the Q yDNA, especially Q-M242
rather than the Q-M3 of other native populations. This suggests
that they may be related to the Yenisean people (now represented
solely by the Ket). C yDNA is also high - up to 42% - which
suggests a relation to the Tungus/Turkic/Mongol people. They have
a mix of O and A blood types.
The Aleut-Inuit people tend to be of the Q yDNA group at between
46 and 80%, and have a greater balance of all the blood types.
Genetically, they are more similar to the Chukchi and Koryak, as
well as some north-eastern Turkic people.
© 2014, C. George Boeree
Maps from PALE Paleoenvironmental Atlas of Beringia, as presented
in Wikipedia; Text added.