Edmontonia fossil map
Where fossils of Edmontonia 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 | Stegosaurs & ankylosaurs |
|---|---|
| Lived | 83.6–66 million years ago (Campanian to Maastrichtian) |
| Periods | Cretaceous |
| Family | Nodosauridae |
| Named by | Sternberg 1928 |
| Fossil records | 16 occurrences at 15 locations (PBDB) |
| Found in | United States, Canada |
| Rock formations | Judith River, Aguja, Hell Creek, Denver, St. Mary River, Matanuska |
About Edmontonia
Edmontonia is a genus of panoplosaurin nodosaurid dinosaur from the Late Cretaceous Period of what is now western North America. It is named after the Edmonton Formation (now the Horseshoe Canyon Formation in Canada), the unit of rocks where it was first found.
Text in “About” is quoted from the Wikipedia article Edmontonia (revision 1380128835), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 22 October 2026. Ages are those of the rock layers the fossils were found in.
