Cormocyon fossil map
Where fossils of Cormocyon 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 | 41.03–5.333 million years ago (Bartonian to Messinian) |
| Periods | Paleogene, Neogene |
| Family | Canidae |
| Named by | Wang and Tedford 1992 |
| Fossil records | 34 occurrences at 14 locations (PBDB) |
| Found in | United States, Mexico |
| Rock formations | txn:41189, John Day, Harrison, Troublesome, Gering, Sharps |
About Cormocyon
Cormocyon is an extinct genus of borophagine canid native to North America. It lived from the Oligocene to the Early Miocene, 30.8—20.6 Mya, existing for about 10.2 million years. It is regarded as a primitive, transitional member of the Borophagini tribe.
Text in “About” is quoted from the Wikipedia article Cormocyon (revision 1364951150), 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: Q3693628.