Eocardia fossil map
Where fossils of Eocardia 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 | 20.45–11.63 million years ago (Burdigalian to Serravallian) |
| Periods | Neogene |
| Named by | Ameghino 1887 |
| Fossil records | 56 occurrences at 21 locations (PBDB) |
| Found in | Argentina, Chile |
| Rock formations | Santa Cruz, Collón Cura, Galera, Chinches, Collón Curá, Collon Cura |
About Eocardia
Eocardia is an extinct genus of rodent from the Early to Middle Miocene of Argentina (Santa Cruz Formation) and Chile, South America. The 30 centimetres (12 in) long creature was related to guinea pigs and the capybara.
Text in “About” is quoted from the Wikipedia article Eocardia (revision 1280016828), 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: Q965069.
