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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 Simplicidensalso known as the Hagerman Horseis by Roger Hall. You can check out more of Roger's work at http://InkArt.net

Produced for PBS Digital Studios.

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References:
Fossil Horses by Bruce J. MacFadden
http://www.ajsonline.org/content/s31...
https://www.jstor.org/stable/4522989?...
http://chem.tufts.edu/science/evoluti...
https://www.floridamuseum.ufl.edu/fhc...
https://link.springer.com/article/10....
https://www.nationalgeographic.com/ad...
https://www.sciencedirect.com/science...
https://www.palass.org/publications/p...
https://www.nature.com/articles/natur...
https://www.nature.com/articles/natur...
http://digitallibrary.amnh.org/bitstr...
https://projects.iq.harvard.edu/spier...
https://www.geolsoc.org.uk/Geoscienti...
http://facstaff.uwa.edu/jmccall/Evolu...