Diplasiotherium fossil map
Where fossils of Diplasiotherium 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 | 8–3.8 million years ago (Tortonian to Zanclean) |
| Periods | Neogene |
| Family | Proterotheriidae |
| Named by | Rovereto 1914 |
| Fossil records | 14 occurrences at 7 locations (PBDB) |
| Found in | Argentina |
| Rock formations | Cerro Azul, Monte Hermoso, Epecuén, txn:43468 |
About Diplasiotherium
Diplasiotherium is an extinct genus of litoptern belonging to the family Proterotheriidae, that lived between the late Miocene and the early Pliocene (in the SALMAs Huayquerian and Montehermosan). The fossils of this animal have been found in Argentina, in the Monte Hermoso Formation.
Diplasiotherium is distinguished from other proterotheriids by the crown of its molars, which were higher than in other related genera (protohypsodont), and by its larger body size; the species D. robustum reached approximately 395 kilograms (871 lb) in weight, making it the largest known proterotheriid.
Text in “About” is quoted from the Wikipedia article Diplasiotherium (revision 1354880130), 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: Q5807723.