Isostylomys fossil map
Where fossils of Isostylomys 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 | 11.63–3.8 million years ago (Tortonian to Zanclean) |
| Periods | Neogene |
| Family | Dinomyidae |
| Named by | Kraglievich 1926 |
| Fossil records | 10 occurrences at 3 locations (PBDB) |
| Found in | Argentina, Uruguay |
| Rock formations | Ituzaingo, txn:42089, Camacho |
About Isostylomys
Isostylomys is an extinct genus of dinomyid rodent from the Huayquerian. Fossils have been found at the Ituzaingó Formation in Argentina and Camacho Formation in Uruguay.
Text in “About” is quoted from the Wikipedia article Isostylomys (revision 1359008608), 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: Q123560858.
