Phenacocoelus fossil map
Where fossils of Phenacocoelus 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 | 24.7–18.5 million years ago (Chattian to Burdigalian) |
| Periods | Paleogene, Neogene |
| Family | Merycoidodontidae |
| Named by | Peterson 1907 |
| Fossil records | 12 occurrences at 4 locations (PBDB) |
| Found in | United States |
| Rock formations | txn:42488, Harrison, Monroe Creek, Marsland |
About Phenacocoelus
Phenacocoelus is an extinct genus of Artiodactyl of the family Merycoidodontidae, endemic to North America. They lived during the Early Miocene 24.8—20.4 mya, existing for approximately 4 million years. Fossils have been uncovered in eastern Wyoming and western Nebraska, both in the United States.
Text in “About” is quoted from the Wikipedia article Phenacocoelus (revision 1361205883), 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: Q7181311.
