Miniochoerus fossil map
Where fossils of Miniochoerus have been found, shown on the Earth as it looked about 30 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 30 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 | 37–29.5 million years ago (Priabonian to Rupelian) |
| Periods | Paleogene |
| Family | Merycoidodontidae |
| Named by | Schultz and Falkenbach 1956 |
| Fossil records | 250 occurrences at 18 locations (PBDB) |
| Found in | United States |
| Rock formations | Brule, txn:42488, Chadron, White River, Sage Creek |
About Miniochoerus
Miniochoerus is an extinct genus of small oreodont endemic to North America. They lived during the Late Eocene to Early Oligocene 38–30.8 mya, existing for approximately 7 million years. Fossils have been found only in North Dakota, South Dakota, Nebraska, Montana, and Wyoming.
Text in “About” is quoted from the Wikipedia article Miniochoerus (revision 1345022663), 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: Q6865644.