Until approximately when did the relict population of woolly mammoths survive exclusively on Wrangel Island?
Answer
About 4,000 years ago
The extinction of the woolly mammoth was not uniform across its entire range. While the vast majority of continental populations vanished around 10,000 years ago following the end of the Pleistocene and significant warming, isolated groups persisted much longer. The most famous example is the population found on Wrangel Island in the Arctic Ocean. This island population managed to survive far longer than its mainland counterparts, persisting until relatively recently, approximately 4,000 years ago, before their final demise, likely hastened by genetic bottlenecks due to isolation.
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Evolution of the woolly mammoth - BBC science - YouTube
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