Riostegotherium fossil map
Where fossils of Riostegotherium have been found, shown on the Earth as it looked about 45 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 45 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 | 56–41.03 million years ago (Ypresian to Lutetian) |
| Periods | Paleogene |
| Family | Dasypodidae |
| Named by | Oliveira and Bergqvist 1998 |
| Fossil records | 6 occurrences at 3 locations (PBDB) |
| Found in | Argentina, Brazil |
| Rock formations | txn:96034, Andesitas Huancache, Itaboraí |
About Riostegotherium
Riostegotherium was an extinct genus of armadillo from the Early to Late Eocene of South America. Fossils of the genus have been found in the Andesitas Huancache Formation of Argentina and in the Itaboraí Formation, Rio de Janeiro, Brazil.
Text in “About” is quoted from the Wikipedia article Riostegotherium (revision 1296671764), 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: Q16964199.
