Meet Hipparion, the horse that time forgot. This prehistoric pony roamed the grassy plains of the Miocene through to the Pleistocene. With three-toed hooves and a size smaller than today's horses, Hipparion was like the compact car of the ancient animal kingdom.

These creatures were not just limited to one continent, they were the globetrotters of their time, found in North America, Europe, Asia, and Africa. Unfortunately, as global temperatures dropped, so did the population of Hipparions.

Although Hipparions are the most common large mammal in many 10-million-year-old fossil sites, the reality is that they were only ever a side-hustle of horse evolution, with no modern survivors. The last of the line, Cormohipparion emsliei, hung up its horseshoes in Florida around 2 million years ago.