Brachyhyops fossil map
Where fossils of Brachyhyops 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 | 48.07–33.9 million years ago (Lutetian to Priabonian) |
| Periods | Paleogene |
| Family | Entelodontidae |
| Named by | Colbert 1937 |
| Fossil records | 28 occurrences at 13 locations (PBDB) |
| Found in | United States, China, Mongolia, Canada |
| Rock formations | txn:42365, Ergilin Dzo, White River, Chambers Tuff, Duchesne River, Baca |
About Brachyhyops
Brachyhyops is an extinct genus of entelodont artiodactyl mammal that lived during the Eocene Epoch of western North America and Asia. The first fossil remains of Brachyhyops are recorded from the late Eocene deposits of Beaver Divide in central Wyoming and discovered by paleontology crews from the Carnegie Museum of Natural History during the early 20th century. The type species, Brachyhyops wyomingensis, is based on a single skull and was named by E.H. Colbert in 1937, but was not officially described until 1938. During the latter half of the 20th century, additional specimens from North America have been recorded from Saskatchewan and as far south as Texas, indicating that Brachyhyops had a broad distribution and was well-dispersed throughout western North America. The oldest species, as well as the geologically the oldest entelodont, B. yunnanensis was found within the Lumeiyi Formation, corresponds to the late Lutetian to early Bartonian. More recent discoveries from Eocene deposits in Mongolia lead to the recognition of a second species of Brachyhyops, B trofimovi.
Text in “About” is quoted from the Wikipedia article Brachyhyops (revision 1378661025), 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: Q4953455.
