Limnocyon fossil map
Where fossils of Limnocyon 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 | 51.1–39.7 million years ago (Ypresian to Bartonian) |
| Periods | Paleogene |
| Named by | Marsh 1872 |
| Fossil records | 44 occurrences at 11 locations (PBDB) |
| Found in | United States |
| Rock formations | Bridger, Uinta, Washakie, txn:NF, Wind River, Green River |
About Limnocyon
Limnocyon ("swamp dog") is an extinct paraphyletic genus of limnocyonine hyaenodont that lived in North America during the Early to Middle Eocene, going extinct at the end of Uintan stage. Fossils of this animal have been found in California, Utah and Wyoming.
Text in “About” is quoted from the Wikipedia article Limnocyon (revision 1380177816), 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: Q20888487.
