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to develop a degree of reproductive isolation since their divergence 5.7 million years ago. Coyotes, dholes, gray wolves, and the extinct Xenocyon evolved in Eurasia and expanded into North America relatively recently during the Late Pleistocene, therefore there was no admixture with the dire wolf. As a result, the study found that the correct binomial name of the dire wolf is Aenocyon dirus, as proposed by Merriam in 1918. The long-term

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