Beringia
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Beringia is a prehistoric geographical region, defined as the land and maritime area bounded on the west by the Lena River in Russia; on the east by the Mackenzie River in Canada; on the north by 72°
The Last Glacial Period caused a much lower global sea level
The Mammut americanum (American mastodon) became extinct around 12,000–9,000 years ago due to human-related activities, climate change, or a combination of both. See Quaternary extinction event and Holocene extinction.
Bering Strait crossing
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A Bering Strait crossing is a hypothetical bridge or tunnel that would span the relatively narrow and shallow Bering Strait between the Chukotka Peninsula in Russia and the Seward Peninsula in the U.S
Beringia
…biota has been asymmetric, with more plants, animals, and fungi generally migrating from Asia to North America than vice versa throughout the Cenozoic. Bering Strait crossing Bluefish Caves…
Place for the bridge, showing the Siberian ghost town of Naukan as its western terminus.