Fossils of Eohippus have been found in various locations across North America and Europe. They weren't all discovered at once; paleontologists have been finding and studying these fossils for over a century.
The most famous locations for Eohippus fossils include:
* Wyoming, USA: The "Bridger Basin" is a particularly rich site.
* Europe: Locations in England and France have also yielded Eohippus fossils.
It's important to note that paleontology is constantly evolving. New discoveries and re-evaluations of existing fossils occur regularly, so the locations where Eohippus fossils are found may continue to expand.