Eoauchenia fossil map
Where fossils of Eoauchenia have been found, shown on the Earth as it looked about 5 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 5 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 | 8–3.6 million years ago (Tortonian to Zanclean) |
| Periods | Neogene |
| Family | Proterotheriidae |
| Named by | Ameghino 1887 |
| Fossil records | 22 occurrences at 5 locations (PBDB) |
| Found in | Argentina |
| Rock formations | Monte Hermoso, Epecuén, txn:43468, Toro Negro, Cerro Azul |
About Eoauchenia
Eoauchenia is a genus of extinct proterotheriid from the Late Miocene and Early Pliocene of Argentina. The genus was named by Ameghino in 1887 for the type species E. primitiva, which was originally known from the early Pliocene Monte Hermoso Formation of the Montehermosan age of Buenos Aires Province, but has since been found in the Cerro Azul Formation of the late Huayquerian of La Pampa Province. The fossils originally known included postcranial remains like foot material, but teeth, a skull and skeleton, and mandibles and further postcrania have since been referred to Eoauchenia, which can be distinguished from Epitherium found alongside it by more gracile bones.
Text in “About” is quoted from the Wikipedia article Eoauchenia (revision 1234296723), 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: Q112077467.
