Syndyoceras fossil map
Where fossils of Syndyoceras 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 | 23.1–18.5 million years ago (Chattian to Burdigalian) |
| Periods | Paleogene, Neogene |
| Family | Protoceratidae |
| Named by | Barbour 1905 |
| Fossil records | 14 occurrences at 3 locations (PBDB) |
| Found in | United States |
| Rock formations | Marsland, Harrison, Wildcat Hills Beds |
About Syndyoceras
Syndyoceras is a small extinct genus of Artiodactyla, of the family Protoceratidae, endemic to central North America from the Miocene epoch (23.1—18.5 Ma), existing for approximately 4.6 million years.
Text in “About” is quoted from the Wikipedia article Syndyoceras (revision 1296149742), 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: Q2844148.
