Nobody disputes the story of horses arriving in the New World with Spanish explorers 500 years ago. According to the narrative, they evolved in North America but were wiped out around 10,000 years ago, making them a re-introduced species.
Now, a researcher who studied the fossil record and interviewed native peoples, says they were here all along, making them indigenous.
Refer to this story, posted today by the Navajo-Hopi Observer.