Eodelphis fossil map
Where fossils of Eodelphis have been found, shown on the Earth as it looked about 75 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 75 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 | 85.7–66 million years ago (Santonian to Maastrichtian) |
| Periods | Cretaceous |
| Family | Stagodontidae |
| Named by | Matthew 1916 |
| Fossil records | 46 occurrences at 17 locations (PBDB) |
| Found in | Canada, United States |
| Rock formations | Judith River, Oldman, Milk River, txn:40004, St. Mary River, Dinosaur Park |
About Eodelphis
Eodelphis, from eo- (dawn) and [Di]delphis (a genus of Opossum), thus meaning "dawn opossum", is a genus of stagodontid metatherians from the Late Cretaceous of North America, with distinctive crushing dentition. Named species include E. browni and the more advanced E. cutleri. Both come from the Late Campanian (Judithian "Land Mammal Age") of Dinosaur Provincial Park, Alberta. Specimens are also known from the Judith River Formation of Montana. E. cutleri is related to the Maastrichtian genus Didelphodon as indicated by its enlarged premolars and more robust jaw. Eodelphis was probably an aquatic predator like its relative Didelphodon, and may have weighed about 0.6 kg (1.3 lb), making it one of the largest mammals of its time.
Text in “About” is quoted from the Wikipedia article Eodelphis (revision 1315687918), 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: Q28093983.
