Oldfieldthomasia fossil map
Where fossils of Oldfieldthomasia 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 | 56–37.71 million years ago (Ypresian to Bartonian) |
| Periods | Paleogene |
| Family | Oldfieldthomasiidae |
| Named by | Ameghino 1901 |
| Fossil records | 50 occurrences at 9 locations (PBDB) |
| Found in | Argentina |
| Rock formations | Sarmiento, txn:43341 |
About Oldfieldthomasia
Oldfieldthomasia is an extinct genus of notoungulate, probably related to the suborder Typotheria. It lived during the Middle Eocene, in what is today South America.
Text in “About” is quoted from the Wikipedia article Oldfieldthomasia (revision 1367144441), 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: Q51803739.
