Indosiren fossil map
Where fossils of Indosiren 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 | 23.04–11.63 million years ago (Aquitanian to Serravallian) |
| Periods | Neogene |
| Family | Dugongidae |
| Named by | von Koenigswald 1952 |
| Fossil records | 6 occurrences at 3 locations (PBDB) |
| Found in | India, Indonesia |
| Rock formations | txn:43286 |
About Indosiren
Indosiren is a genus of sirenian that lived in the Western part of Java during Miocene epoch. It was described as Indosiren javanense and then amended into I. javanensis. Not much is known regarding the animal overall shape and lifestyle: it is only known from a tooth fragment that was inferred to be a molar (M2/M3). The tooth is a small (14,6 mm x 13,5 mm x 10,6 mm) biphodont upper molar that lack development roots. It is said that the occlusal surface is similar to the tooth of Trichechus (the extant manatees) and Prototherium, while the lateral view also bears resemblance to manatee. The original describer (Koeningswald, 1952) also mentioned that the tooth differs from other genera of similar age such as Miosiren and Metaxytherium (then recognized as Halianassa and Felsinotherium).
Text in “About” is quoted from the Wikipedia article Indosiren (revision 1377935029), 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: Q681846.
