Genus · Nodosauridae · Cretaceous
Edmontonia
Named by Sternberg 1928
Edmontonia lived 83.6–66 million years ago, during the Campanian to Maastrichtian stages of the Late Cretaceous. The Paleobiology Database lists 16 fossil records for it from 2 countries (United States and Canada) — the 74th most of the 99 genera on this site.
Where it sits in time
Key facts from the records
- Its records are spread over at least 10 formations; the largest share, 19%, is from the Judith River Formation.
- Troodon appears in 25% of the collections that hold Edmontonia; Stegoceras in 19%.
- Its stage range spans about 17.6 million years (15th longest of 99); it is the 9th best-recorded of the 14 armoured & plated dinosaurs here.
1 accepted species
Edmontonia has a single accepted species in PBDB.
| Species | Named by | Records |
|---|---|---|
| Edmontonia longiceps | Sternberg 1928 | 4 |
Where it was found
16 records with coordinates.
Found alongside
Rock formations
States & provinces
| Region | Records | Share |
|---|---|---|
| Alberta | 4 | 25% |
| Montana | 3 | 19% |
| Texas | 3 | 19% |
| Colorado | 2 | 12% |
| South Dakota | 2 | 12% |
| Alaska | 1 | 6% |
| Saskatchewan | 1 | 6% |
| Country | Records | Share |
|---|---|---|
| United States | 11 | 69% |
| Canada | 5 | 31% |
Records by stage
Well-dated records, by the stage of their mid-point age.
Other armoured & plated dinosaurs of its time
Same group, overlapping stage range, not found in the same collections.
| Genus | Age | Country | Records |
|---|---|---|---|
| Pinacosaurus | 83.6–72.1 Ma | Mongolia, China | 24 |
| Struthiosaurus | 83.6–66 Ma | Romania, Austria | 23 |
| Euoplocephalus | 83.6–72.1 Ma | Canada, United States | 18 |
| Ankylosaurus | 72.1–66 Ma | United States, Canada | 16 |
| Panoplosaurus | 83.6–66 Ma | United States, Canada | 15 |
| Anodontosaurus | 83.6–66 Ma | Canada | 14 |
Also from these formations
Data: PBDB taxon 63919 · method