Nesodon fossil map
Where fossils of Nesodon 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 | 29–15.5 million years ago (Rupelian to Langhian) |
| Periods | Paleogene, Neogene |
| Family | Toxodontidae |
| Named by | Owen 1846 |
| Fossil records | 86 occurrences at 32 locations (PBDB) |
| Found in | Argentina, Chile |
| Rock formations | Santa Cruz, Cura-Mallín, Aisol, Deseado, Galera, Chucal |
About Nesodon
Nesodon ("island tooth") is a genus of Miocene mammal belonging to the extinct order Notoungulata which inhabited southern South America during the Late Oligocene to Miocene living from 29.0 to 16.3 Ma and existed for approximately 12.7 million years.
It had a relatively large size, weighing up to 554 kg (1221 lbs) and reaching 1.5 m in height.
Text in “About” is quoted from the Wikipedia article Nesodon (revision 1258133557), 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: Q846251.
