Paleontologists now agree that the Dire Wolf evolved in North America. However, the ancestral lineage that gave rise to it is debated with two competing theories. The first theory is based on fossil morphology, which indicates an expansion of genus Canis from out of Eurasia led to the Dire Wolf. The second theory is based on DNA evidence, which indicates the Dire Wolf arose from an ancestral lineage which originated in the Americas and was separate to genus Canis.

Morphological Evidence

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DNA Evidence

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