Caribosiren fossil map
Where fossils of Caribosiren have been found, shown on the Earth as it looked about 30 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 30 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 | 27.3–23.04 million years ago (Chattian) |
| Periods | Paleogene |
| Family | Dugongidae |
| Named by | Reinhart 1959 |
| Fossil records | 4 occurrences at 2 locations (PBDB) |
| Found in | Puerto Rico, United States |
| Rock formations | San Sebastian, Lares Limestone |
About Caribosiren
Caribosiren is an extinct genus of afrotherian mammal which existed in what is now Puerto Rico during the Chattian stage of the Oligocene epoch. Fossils have been recovered from the San Sebastián Limestone.
Text in “About” is quoted from the Wikipedia article Caribosiren (revision 1358407398), 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: Q3658588.