how are the modern day animals different their ancestor horse
RECENT, 10,000 years ago to Present. The modern day species of Equus (horses, zebras, and asses) have been around for about 2 million years. They are very different from the earliest known horse, Hyracotherium, otherwise knows as Oehippus, or âDawn Horseâ. This ancient horse was a small, dog-sized creature that lived from 55 to 45 million years ago.
A Brief History of Horses. By 55 million years ago, the first members of the horse family, the dog-sized Hyracotherium, were scampering through the forests that covered North America. For more than half their history, most horses remained small, forest browsers.