Hypercoryphodon fossil map
Where fossils of Hypercoryphodon 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 | 37.71–33.9 million years ago (Priabonian) |
| Periods | Paleogene |
| Family | Coryphodontidae |
| Named by | Osborn and Granger 1932 |
| Fossil records | 4 occurrences at 2 locations (PBDB) |
| Found in | China, Mongolia |
| Rock formations | txn:40573, Ergilin Dzo |
About Hypercoryphodon
Hypercoryphodon is an extinct genus of rhinoceros-sized pantodont native to Late Eocene Mongolia, and was very similar to its ancestor, Coryphodon. Described from a skull, Hypercoryphodon is a quadrupedal hippopotamus-like herbivore that may have been able to adapt its feeding to suit different situations. It is thought to have possibly lived in wetland to forest ecosystems that it might have shared with other herbivores such as dinoceratans like Gobiatherium. The low-crowned teeth of Hypercoryphodon were adapted for feeding on soft aquatic vegetation.
Text in “About” is quoted from the Wikipedia article Hypercoryphodon (revision 1368535649), 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: Q573199.