Eoconodon fossil map
Where fossils of Eoconodon have been found, shown on the Earth as it looked about 66 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 66 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 | 66–63.4 million years ago (Danian) |
| Periods | Paleogene |
| Family | Triisodontidae |
| Named by | Matthew and Granger 1921 |
| Fossil records | 62 occurrences at 12 locations (PBDB) |
| Found in | United States, Canada |
| Rock formations | Fort Union, Nacimiento, Tullock, Ferris, Denver, Ravenscrag |
About Eoconodon
Eoconodon is an extinct genus of triisodontid that existed during the Early Paleocene of North America. Characteristics of the genus include massive jaws, blunt builds, and strong canine teeth.
Eoconodon is considered to be a giant for mammals during the Early Paleocene, with E. coryphaeus weighing up to 47 kilograms (104 lb), although other experts suggest a smaller mass estimate of 12.6 kg (28 lb).
Text in “About” is quoted from the Wikipedia article Eoconodon (revision 1379527350), 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: Q4703562.
