North American Woolly Mammoths

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New DNA analysis shows that the last of the woolly mammoths, even those who lived in Asia, were all genetically North American. This suggests that woolly mammoths actually migrated in both directions over the Bering Strait land bridge, and that not all important developments in the evolution of woolly mammoths happened in Siberia. Ross MacPhee is Curator of Mammalogy at the AMNH.