Triplopus fossil map
Where fossils of Triplopus have been found, shown on the Earth as it looked about 45 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 45 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 | 56–33.9 million years ago (Ypresian to Priabonian) |
| Periods | Paleogene |
| Family | Hyracodontidae |
| Named by | Cope 1880 |
| Fossil records | 90 occurrences at 28 locations (PBDB) |
| Found in | United States, China, Kazakhstan, Mongolia |
| Rock formations | Uinta, Washakie, Santiago, Sespe, Bridger, txn:43144 |
About Triplopus
Triplopus is a genus of perissodactyl, possibly a hyracodont, from the Uinta Formation. Some species formerly assigned to Triplopus have been assigned to Eotrigonias and Hyrachyus in the past, though this is disputed. Triplopus was likely a cursorial browser, similar to other hyracodonts.
Text in “About” is quoted from the Wikipedia article Triplopus (revision 1346307001), 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: Q56248823.