The Wooly Mammoth was one of the last mammoth species to become extinct. Its closest still-living relative is the Asian elephant. Mammoths used the Bering Land Bridge to migrate from Siberia to North America. Present day Alaska and Canada (and some of New England) were home to the Wooly mammoth, while another species, the Columbian mammoth, lived in the area covered today by the 48 mainland states, and as far south as Costa Rica. Recent DNA studies indicate that that Wooly mammoths and Columbian mammoths could and did impregnate each other.
The Woolly mammoth evolved in Siberia some 400,000 years ago. Some of them entered North America about 100,000 by crossing the Bering Land Bridge. I found several dates for extinction, such as 5,700 years ago in the Yukon (Canada), 5,600 years ago on St Paul Island (Alaska), 4,000 years ago on Wrangel Island (Russia), to 3,900 years ago on the Taymyr Peninsula (Russia). So yes, they co-existed with humans, who used mammoth bones and tusks for making art, tools, dwellings and as food.
Woolly mammoths are among the best studied prehistoric animal because of the discovery of frozen carcasses (Siberia & N America), as well as teeth, stomach contents, dung, and the depiction of them in prehistoric cave paintings. This species became known to Europeans in the 17th century, but had been known in Asia long before that.
Woolly mammoths were roughly the same size as modern African elephants. Males could reach shoulder heights of 11 ft and weighed up to 6 tons, while females reached a shoulder height of about 8 ft, and weighed up to 4 tons. A newborn calf weighed about 200 lbs, and would have been nursed for 3 years before being weaned to a diet of grasses and such. An individual could probably live for 60 years.
Well adapted to the cold ice age, the Woolly mammoth was covered in fur, which varied from dark to light. The ears and tail were short to minimize frostbite and heat loss. It had long, curved tusks, which it used for manipulating objects, fighting and foraging. Its diet was mainly grasses and sedges (a large family of flowering grass-like plants). Its habitat stretched across northern Eurasia and North America.
A genome project for the woolly mammoth was completed in 2015. It has been proposed that the species could be revived, but none of the methods proposed are yet feasible. One article I read postulated that reviving the species could possibly help stabilize the tundra areas of the far north, helping to mitigate the climate change those areas are experiencing, but their reasoning didn't make much sense to me. Having these large creatures roam through the thawing tundra, even if they drag seeds along with them, is not going to halt the thawing of the permafrost. The woolly mammoths could not survive when the rising temperatures melted the huge glaciers of the ice age, and I don't see how they would survive now, when the temperature is even higher.
In my opinion, bringing ice age critters back to life now would only be dooming them to a short, miserable existence before they once again go extinct.
https://en.wikipedia.org/wiki/Woolly_mammoth
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