Eotheroides fossil map
Where fossils of Eotheroides 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 | 48.07–33.9 million years ago (Lutetian to Priabonian) |
| Periods | Paleogene |
| Family | Dugongidae |
| Named by | Palmer 1899 |
| Fossil records | 82 occurrences at 30 locations (PBDB) |
| Found in | Egypt, Western Sahara, France, India, United States, Madagascar, Jordan, Romania |
| Rock formations | Birket Qarun, txn:43286, Samlat, Harudi, Mokattam, Tupelo Bay |
About Eotheroides
Eotheroides is an extinct genus of Eocene sirenian. It is an early member of the family Dugongidae, which includes the extant dugong. Fossils have been found from Egypt, India, and Madagascar. Eotheroides was first described by Richard Owen in 1875 under the name Eotherium, which was replaced by the current name in 1899.
Based on endocranial casts, Eotheroiodes had a smaller endocranial volume than other contemporaneous sirenians such as Protosiren. Unlike extant sirenians, Eotheroides possesses a tentorium cerebelli, which appears as a distinct transverse groove on the skull.
Text in “About” is quoted from the Wikipedia article Eotheroides (revision 1341179495), 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: Q1452411.
