Necromys fossil map
Where fossils of Necromys 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 | Cricetidae |
| Named by | Ameghino 1889 |
| Fossil records | 28 occurrences at 12 locations (PBDB) |
| Found in | Argentina, Brazil, Bolivia, Mexico |
| Rock formations | txn:41724, Monte Hermoso, Nuapua, TafĂ del Valle, Puerto Belgrano, Botucatu |
About Necromys
Necromys is a genus of South American sigmodontine rodents allied to Akodon. This genus has also been known as Cabreramys or more recently Bolomys, and the northern grass mouse (N. urichi) has recently been transferred from Akodon.
Text in “About” is quoted from the Wikipedia article Necromys (revision 1258183963), 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: Q139082.
