Arctic fox ancestor had supersharp teeth

The home of the snow white fox is as far north as you can get in the Arctic tundra; so why are fossils that bear a resemblance to it showing up in Tibet? Researchers think they’ve found the ancestor to the modern-day arctic fox, National Geographic reports. Dubbed Vulpes qiuzhudingi, it lived 5.3 million to 2.6 million years ago and had supersharp teeth that resemble those of today’s carnivorous species. The finding, published online this week in the Proceedings of the Royal Society B, supports the idea that the fox migrated out of Tibet to regions farther north.

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