Cronopio fossil map
Where fossils of Cronopio have been found, shown on the Earth as it looked about 115 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 115 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 | 113.2–110.1 million years ago (Albian) |
| Periods | Cretaceous |
| Named by | Rougier et al. 2011 |
| Fossil records | 2 occurrences at 1 locations (PBDB) |
| Found in | Argentina |
| Rock formations | Candeleros |
About Cronopio
Cronopio is an extinct genus of small insectivorous mammal known from the Early Cretaceous (Albian) of the Río Negro region in Argentina. The genus contains a single species, Cronopio dentiacutus. It belongs to the Meridiolestida, an extinct group of mammals widespread in South America during the Late Cretaceous, which are more closely related to modern marsupials and placental mammals than to monotremes.
Text in “About” is quoted from the Wikipedia article Cronopio dentiacutus (revision 1369533494), 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: Q16014290.
