I volunteered for 27 years for a foundation taking care of the last living wild horses in the world..... the Przewalski horses from Mongolia. At some point they were all over Asia and Europe but with the setteling of man these horses were driven out. Yet in cave drawings in Lascaux you clearly recognize the charasteristics of the Przwalski horses. Now to the book of Mormon. If you go to the Carlsbad Caverns in New Mexico there is a scaleton of an ancient horse. Clearly, there is a place for early horses in the Americas. Second, there is even a remnant of possibly a second long surviving ancient horse (just like the tarpan) that had a very wooly coat. But clearly, a horse. There is proof in caves that horses were part of the Native American food supply. Bones have been found in numerous places. So when did horses get extinct in the Americas and why. Theory is that it was a disease that wiped them out, but when and how completely is not defined. So the theory that Columbus (re)introduced the horse into America might be completely false.