Achaenodon fossil map
Where fossils of Achaenodon 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 | 48.07–37.71 million years ago (Lutetian to Bartonian) |
| Periods | Paleogene |
| Family | Helohyidae |
| Named by | Cope 1873 |
| Fossil records | 34 occurrences at 6 locations (PBDB) |
| Found in | United States |
| Rock formations | Uinta, Friars, Tepee Trail, Washakie, Clarno |
About Achaenodon
Achaenodon is an extinct artiodactyl mammal belonging to the family Helohyidae. It lived in the mid-late Eocene (about 43-39 million years ago) and its fossil remains have been found in North America.
Text in “About” is quoted from the Wikipedia article Achaenodon (revision 1356058135), 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: Q11904091.
