Prehistoric horses in North America

This 14 August 2018 video from the USA says about itself:

How Horses Took Over North America (Twice)

The ancestors of modern horses became so successful that they spread all over the world, to Europe, Asia, South America, and Africa. But in their native range of North America, they’ll vanish for 10,000 years. Until another strange mammal brings them back.

The illustration of Equus simplicidens–also known as the Hagerman Horse–is by Roger Hall. You can check out more of Roger’s work here.