Bering land bridge

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A link (see land bridge) between Siberia and Alaska that has existed intermittently during the Cenozoic, permitting the migration of species between Eurasia and North America. It may have provided the means by which human invasion of the Americas from Asia took place at the close of the last glaciation, although radiocarbon dating reported in 2003 revealed that the Siberian site believed to be the departure point for migrants was about 13  000 years old, while undisputed dating shows a site in New Mexico was occupied 13  600 years ago. The Bering land bridge was the only overland route into North America once the direct link between Europe and North America had been broken by the opening of the Atlantic Ocean.

Subjects: Ecology and Conservation.

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