🦕 Prehistoric World Map

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 →

Caribosiren
Image: Vanessa R. Rhue, CC0, via Wikimedia Commons
GroupEarly mammals
Lived27.3–23.04 million years ago (Chattian)
PeriodsPaleogene
FamilyDugongidae
Named byReinhart 1959
Fossil records4 occurrences at 2 locations (PBDB)
Found inPuerto Rico, United States
Rock formationsSan 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.

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