Heterohyus fossil map
Where fossils of Heterohyus 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 | Apatemyidae |
| Named by | Gervais 1848 |
| Fossil records | 62 occurrences at 19 locations (PBDB) |
| Found in | France, United Kingdom, Switzerland, Spain, Germany, Portugal |
| Rock formations | txn:40242, Lignites de Soissonais, Creechbarrow Limestone, Perrière, Bembridge Limestone, Headon Beds |
About Heterohyus
Heterohyus is an extinct genus of apatemyid from the early to late Eocene. A small, tree-dwelling creature with elongated fore- and middle fingers, in these regards it somewhat resembled a modern-day aye-aye.
Three skeletons have been found at the early Eocene site at Messel Pit, Germany
Text in “About” is quoted from the Wikipedia article Heterohyus (revision 1368535279), 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: Q5747268.