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Ancient Strait Is Clue in Falklands Wolf’s Origin

The Falkland Islands wolf, long extinct, is the only land-based mammal native to the islands. European explorers in the 17th century were puzzled by the presence of this lone mammalian species, as was Charles Darwin.

Now, researchers writing in Nature Communications suggest that the wolf traveled across a thin, shallow strait from the mainland to the islands during the last glacial maximum. During this period, about 18,000 to 25,000 years ago, the strait would periodically freeze over…

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