Ischyrocyon fossil map
Where fossils of Ischyrocyon 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 | 23.04–4.7 million years ago (Aquitanian to Zanclean) |
| Periods | Neogene |
| Family | Amphicyonidae |
| Named by | Matthew and Gidley 1904 |
| Fossil records | 76 occurrences at 22 locations (PBDB) |
| Found in | United States |
| Rock formations | Ash Hollow, Valentine, txn:41266, Barstow, Goliad, Dove Spring |
About Ischyrocyon
Ischyrocyon is an extinct genus of amphicyonids that inhabited North America during the Late Miocene. It lived 14 to 9 Ma ago, existing for approximately 5 million years.
Text in “About” is quoted from the Wikipedia article Ischyrocyon (revision 1381306049), 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: Q11683729.
