Stone tools have been found in Arabia which were used 8,000 years and are unlike anything else found from the region at this time.
The tools were created via a method called fluting and closely resemble instruments first invented up to 13,000 years ago in the Americas.
However, experts believe the tools are not evidence of Native American technologies drifting halfway around the Neolithic world.
Instead, a scientific study concludes that the two groups of people cultivated the same technology independently.
Fluting required significant expertise and was used by Native Americans to create a sharp point on a stone which can be attached to a shaft to form a weapon.
This would be used either in conflict with other people or to hunt.
However, it is thought the inhabitants of Stone Age Arabia did not use it for this purpose, they used the technique simply to show off how good they were at forging tools.
Professor Joy McCorriston, co-author of the study, says: ‘Fluting in Arabia was used as a display of skill, rather than serving a purely functional purpose such as hafting, as is more widely accepted in the Americas.’
Fluting involves chipping away chunks of a stone to form a point and a specific shape.
Dozens of the tools were found at the sites of Manayzah and Ad-Dahariz in Yemen and Oman, respectively.
‘Given their age and the fact that the fluted points from America and Arabia are separated by thousands of kilometers, there is no possible cultural connection between them,’ Professor Felice Petraglia of the Max Planck Institute says.
‘This is then a clear and excellent example of cultural convergence, or independent invention in human history.’
The research was published in the journal PLOS One.