Clyomys fossil map
Where fossils of Clyomys have been found, shown on the Earth as it looked about 0 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 0 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 | 7.246 million years ago to the present (Messinian to Holocene) |
| Periods | Neogene, Quaternary |
| Family | Echimyidae |
| Named by | Thomas 1916 |
| Fossil records | 18 occurrences at 9 locations (PBDB) |
| Found in | Brazil, Argentina |
| Rock formations | txn:42051, Botucatu, Cerro Azul, Miramar |
About Clyomys
Clyomys is a South American rodent genus in the family Echimyidae. It contains two species, found in tropical savannas and grasslands from circa 100 m (300 ft) to 1,100 m (3,600 ft) elevation in central Brazil and eastern Paraguay.
The term Clyomys derives from the two ancient Greek words κλύω (klúō, or clyo), meaning "to listen, to prick up one's ears", and μῦς (mûs), meaning "mouse, rat".
The Clyomys species are:
Broad-headed spiny rat (C. laticeps)
†C. riograndensis
Text in “About” is quoted from the Wikipedia article Clyomys (revision 1368523563), 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: Q550337.
