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Mastodons were Far More Genetically Diverse than Previously Known, Ancient DNA Shows

In new research, scientists sequenced the mitochondrial genomes of several mastodons: five from Nova Scotia and the eastern seaboard, one of which may date to approximately 500,000 years ago, and for the first time, a unique specimen of a Pacific mastodon from Tualatin, Oregon, in addition to a partial mitochondrial genome from Northern Ontario.

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