Mediochoerus fossil map
Where fossils of Mediochoerus have been found, shown on the Earth as it looked about 15 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 15 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 | 18.5–12.5 million years ago (Burdigalian to Serravallian) |
| Periods | Neogene |
| Family | Merycoidodontidae |
| Named by | Schultz and Falkenbach 1941 |
| Fossil records | 6 occurrences at 3 locations (PBDB) |
| Found in | United States |
| Rock formations | Olcott, Barstow, Runningwater |
About Mediochoerus
Mediochoerus is an extinct genus of oreodont of the family Merycoidodontidae, subfamily Merycoidodontinae, endemic to North America during the Early Miocene-Middle Miocene subepochs (20.6—13.6 mya), existing for approximately 7 million years.
Text in “About” is quoted from the Wikipedia article Mediochoerus (revision 1354846596), 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: Q6806970.
