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No, scientists do not know exactly when the Paleo-Indians crossed into North America. These remarkable people came across the Berengia land bridge (most probably) some 40,000 to 16,500 years ago. Any investigator can see that span of time is broad enough to shove a minor planet through it, but there it is. Read just a bit more and then consider your options.
The "exact" time of the crossing is hotly debated by a variety of investigators. There are compelling arguments for the more recent time being closer to the truth, and equally compelling arguments for that longer-ago figure. And don't think that the debate will die down soon. Dig deep and collect data and then submit your own estimate of the time period for that crossing. Oh, and be prepared to be carved up by those who opinions differ.
Certainly the circumspect observer might wish to just survey the data and the arguments, form some private estimate of the time of the crossing, and then wait for someone to pull the smoking gun and settle the debate. Lastly, we might just have to settle for a range or estimates for that crossing. It might narrow as investigators look more deeply using different methods, apply more sophisticated tools to conduct research, or a combination of things. And it might not.
A bit of additional information can be found by using the link below.
What else can I help you with?
How many Indians survived the Trail of Tears?
No one really knows exactly how many Cherokee Indians survived the trail, but approximately it was about 10,000 Indians.
Are the eastern woodland Indians and the Iroquois Indians the same?
Not exactly you see, the Iroquois is a small group of tribes inside the whole subgroup of the eastern woodland Indians
What kind of evidence do historians use to study the past?
they use the evidence from the past that will tell them what exactly happened, or they ask people who were at that certain place and time.
Was juan de padilla killed by the kaw Indians?
Juan de Padilla was killed by Indians, but there are many uncertainties surrounding his death. Nobody knows for sure exactly when and where he was killed, and it is uncertain which tribe actually killed him.
Have archaeologists found evidence that the minotaur lived?
not exactly but greek stories MAY link to where u can find evidense of minotaur.
When and where was the discovery of America found?
Nobody can know exactly when America was first 'discovered', but it was before Christopher Columbus Leif Erikkson and the Welsh Prince Madoc. Many now believe that it was in Prehistoric times, when races of Paleo-Indians crossed the Bering Strait and settled in the Continent, thus becoming North America's first inhabitants and it's indigenous people now popularly known as 'Red Indians'.
Do creek Indians believe in spirits?
not exactly. there is a wonderful creation story that seems to involve a godlike figure, but afterwards there really wasn't evidence of spirits, of furthermore worship.
What is cross threading?
Exactly what it says threads are crossed inside the female fitting
Was the Indians in north and south America the exactly the same thought the north and south?
they were in the same thought the north reported to the gavenment so that they could not stay at the same place.
What is cross threaded mean?
Exactly what it says threads are crossed inside the female fitting
Who exactly were the first people to live in Louisiana?
Indians
What were the benefits of the Spanish exploration of California?
Sorry guys that I can't exactly answer but I think the benefits were: They got new land, they traded. Costs: The land they had discovered (America) was already taken but the 'Indians'
What were the benefits and costs of spanish exploration of California?
Sorry guys that I can't exactly answer but I think the benefits were: They got new land, they traded. Costs: The land they had discovered (America) was already taken but the 'Indians'
What were the benefits and costs of the Spanish exploration of California?
Sorry guys that I can't exactly answer but I think the benefits were: They got new land, they traded. Costs: The land they had discovered (America) was already taken but the 'Indians'
How many Indians survived the Trail of Tears?
No one really knows exactly how many Cherokee Indians survived the trail, but approximately it was about 10,000 Indians.
Where did Arthur grow up?
England there is no historic evidence of where exactly
Are the eastern woodland Indians and the Iroquois Indians the same?
Not exactly you see, the Iroquois is a small group of tribes inside the whole subgroup of the eastern woodland Indians
