Protorohippus fossil map
Where fossils of Protorohippus have been found, shown on the Earth as it looked about 56 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 56 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →
| Group | Early mammals |
|---|---|
| Lived | 56–51.1 million years ago (Ypresian) |
| Periods | Paleogene |
| Family | Equidae |
| Named by | Wortman 1896 |
| Fossil records | 62 occurrences at 15 locations (PBDB) |
| Found in | United States |
| Rock formations | Wasatch, Willwood, Wind River, Farisita |
About Protorohippus
Protorohippus (Latin: "before" (pro), + Greek: "mountain" (oros), "horse" (hippos)) is an extinct genus of equid that lived in the Eocene of North America.
Text in “About” is quoted from the Wikipedia article Protorohippus (revision 1312039772), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q7252110.
