Pronothrotherium fossil map
Where fossils of Pronothrotherium 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 | 8–0.129 million years ago (Tortonian to Chibanian) |
| Periods | Neogene, Quaternary |
| Family | Nothrotheriidae |
| Named by | Ameghino 1907 |
| Fossil records | 14 occurrences at 6 locations (PBDB) |
| Found in | Argentina, Uruguay |
| Rock formations | Raigón, Andalhuala, Ituzaingo, Chapadmalal, Corral Quemado |
About Pronothrotherium
Pronothrotherium is an extinct genus of ground sloths from Argentina and Uruguay. Fossils of Pronothrotherium have been found in the Ituzaingó Formation of Argentina. The body weight of the animal has been estimated at 937 kg (2,066 lb).
Text in “About” is quoted from the Wikipedia article Pronothrotherium (revision 1258221693), 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: Q7249949.
