Stirtonia fossil map
Where fossils of Stirtonia have been found, shown on the Earth as it looked about 15 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 15 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 | 13.8–5 million years ago (Serravallian to Zanclean) |
| Periods | Neogene |
| Family | Atelidae |
| Named by | Hershkovitz 1970 |
| Fossil records | 16 occurrences at 7 locations (PBDB) |
| Found in | Colombia, Brazil, Bolivia |
| Rock formations | La Victoria, txn:40848, Solimoes |
About Stirtonia
Stirtonia is an extinct genus of New World monkeys from the Middle Miocene (Laventan in the South American land mammal ages; 13.8 to 11.8 Ma). Its remains have been found at the Konzentrat-Lagerstätte of La Venta in the Honda Group of Colombia. Two species have been described, S. victoriae and the type species S. tatacoensis. Synonyms are Homunculus tatacoensis, described by Ruben Arthur Stirton in 1951 and Kondous laventicus by Setoguchi in 1985. The genus is classified in Alouattini as an ancestor to the modern howler monkeys.
Text in “About” is quoted from the Wikipedia article Stirtonia (mammal) (revision 1345930731), 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: Q7617627.
