Maddenia fossil map
Where fossils of Maddenia have been found, shown on the Earth as it looked about 30 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 30 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 | 33.9–27.3 million years ago (Rupelian) |
| Periods | Paleogene |
| Family | Astrapotheriidae |
| Named by | Kramarz and Bond 2009 |
| Fossil records | 2 occurrences at 1 locations (PBDB) |
| Found in | AR |
| Rock formations | Sarmiento |
About Maddenia
Maddenia is an extinct genus of astrapothere, meridiungulate herbivore mammals characterised by their large tusks and the development of a proboscis, endemic to South America. This genus was discovered in an outcrop near to the Lake Colhué Huapi in the place La Cantera, in the Chubut Province, in Argentina, in sediments corresponding to the Sarmiento Formation, dating to the Late Oligocene (Deseadan South American land mammal age).
Text in “About” is quoted from the Wikipedia article Maddenia (revision 1289880107), 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: Q5989280.
