Notostylops fossil map
Where fossils of Notostylops 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 | 57–37.71 million years ago (Thanetian to Bartonian) |
| Periods | Paleogene |
| Family | Notostylopidae |
| Named by | Ameghino 1897 |
| Fossil records | 110 occurrences at 19 locations (PBDB) |
| Found in | Argentina |
| Rock formations | Sarmiento, txn:43334, Casamayor, Andesitas Huancache |
About Notostylops
Notostylops ("south pillar face") is a genus of extinct South American notoungulates from Eocene Argentina. Fossils of the genus have been found in the Sarmiento, Casamayor, Andesitas Huancache and Koluel Kaike Formations.
Text in “About” is quoted from the Wikipedia article Notostylops (revision 1333699746), 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: Q912986.
