Eucosmodon fossil map
Where fossils of Eucosmodon have been found, shown on the Earth as it looked about 56 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 56 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 | 66–51.1 million years ago (Danian to Ypresian) |
| Periods | Paleogene |
| Family | Eucosmodontidae |
| Named by | Matthew and Granger 1921 |
| Fossil records | 86 occurrences at 16 locations (PBDB) |
| Found in | United States, Canada |
| Rock formations | Willwood, Nacimiento, Wasatch, Porcupine Hills, "Wasatch", Fort Union |
About Eucosmodon
Eucosmodon is a genus of extinct mammal from the Paleocene of North America. It is a member of the extinct order of Multituberculata within the suborder of Cimolodonta, and the family Eucosmodontidae. This genus has partly also been known as Neoplagiaulax. All known fossils of this small mammal are restricted to teeth.
Text in “About” is quoted from the Wikipedia article Eucosmodon (revision 1368550536), 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: Q5406227.
