Albertatherium fossil map
Where fossils of Albertatherium have been found, shown on the Earth as it looked about 85 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 85 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 | 85.7–83.6 million years ago (Santonian) |
| Periods | Cretaceous |
| Family | Alphadontidae |
| Named by | Fox 1971 |
| Fossil records | 12 occurrences at 2 locations (PBDB) |
| Found in | Canada, United States |
| Rock formations | Milk River, Eagle |
About Albertatherium
Albertatherium (meaning "beast of Alberta") is an extinct genus of alphadontid metatherians that lived during the Late Cretaceous of North America. The genus contains two species, Albertatherium primus (the type species), and Albertatherium secundus. Fossils have been found in the Eagle Formation of Montana and the Milk River Formation of Alberta.
Text in “About” is quoted from the Wikipedia article Albertatherium (revision 1369610307), 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: Q3825052.
