Metacheiromys fossil map
Where fossils of Metacheiromys 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 | 51.1–45.9 million years ago (Ypresian to Lutetian) |
| Periods | Paleogene |
| Family | Metacheiromyidae |
| Named by | Wortman 1903 |
| Fossil records | 36 occurrences at 4 locations (PBDB) |
| Found in | United States |
| Rock formations | Bridger, Green River, Farisita |
About Metacheiromys
Metacheiromys ("next to Cheiromys") is an extinct genus of placental mammals belonging to the extinct paraphyletic subfamily Metacheiromyinae within the extinct paraphyletic family Metacheiromyidae in the extinct order Palaeanodonta. The genus lived in North America (what is now Wyoming) from the early to middle Eocene.
Text in “About” is quoted from the Wikipedia article Metacheiromys (revision 1378233582), 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: Q509726.
