Tetragonostylops fossil map
Where fossils of Tetragonostylops have been found, shown on the Earth as it looked about 56 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 56 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 | 56–41.03 million years ago (Ypresian to Lutetian) |
| Periods | Paleogene |
| Family | Trigonostylopidae |
| Named by | Paula Couto 1963 |
| Fossil records | 6 occurrences at 2 locations (PBDB) |
| Found in | Brazil, Argentina |
| Rock formations | Itaboraí, Sarmiento |
About Tetragonostylops
Tetragonostylops is an extinct genus of mammal, related to Astrapotheria. It lived during the Late Paleocene, and its fossils were discovered in South America.
Text in “About” is quoted from the Wikipedia article Tetragonostylops (revision 1368552237), 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: Q63522402.
