Trigonostylops fossil map
Where fossils of Trigonostylops 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 | 57–27.3 million years ago (Thanetian to Rupelian) |
| Periods | Paleogene |
| Family | Trigonostylopidae |
| Named by | Ameghino 1897 |
| Fossil records | 84 occurrences at 22 locations (PBDB) |
| Found in | Argentina, Brazil, Peru, Antarctica |
| Rock formations | Sarmiento, txn:43454, Las Flores, Casamayor, Pozo, Divisadero Largo |
About Trigonostylops
Trigonostylops is an extinct genus of South American meridiungulatan ungulate, from the Late Paleocene to Late Eocene (Itaboraian to Tinguirirican in the SALMA classification) of South America (Argentina and Peru) and Antarctica (Seymour Island). It is the only member of the family Trigonostylopidae.
Text in “About” is quoted from the Wikipedia article Trigonostylops (revision 1368552341), 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: Q1815379.
