The fossil record suggests that horses evolved in North America and nobody disputes that they were brought to the New World by Spanish explorers around 500 years ago.
But was the disembarkation a reintroduction or a supplementation?
The official storyline says it was a reintroduction.
A summary of comments on a new management plan for the Big Summit WHT includes a reprint of an article by Craig Downer on the subject, beginning on page 49 of the pdf.
At the top of page 53 is a remark about the discovery near Winnemucca Lake in Nevada that was mentioned in the Holy Grail post. The evidence contradicted the wild horse narrative and “appear[s] to have vanished under suspect circumstances,” according to Mr. Downer.
RELATED: Wild vs. Feral: Are America’s Horses a Re-Introduced Species?
Western Horse Watchers Association 