Genus · Ankylosauridae · Cretaceous
Ankylosaurus
Named by Brown 1908
Ankylosaurus lived 72.1–66 million years ago, during the Maastrichtian stage 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 6 formations; the largest share, 31%, is from the Ferris Formation.
- Edmontosaurus appears in 25% of the collections that hold Ankylosaurus; Triceratops in 19%.
- Its stage range spans about 6.1 million years (83rd longest of 99); it is the 9th best-recorded of the 14 armoured & plated dinosaurs here.
1 accepted species
Ankylosaurus has a single accepted species in PBDB.
| Species | Named by | Records |
|---|---|---|
| Ankylosaurus magniventris | Brown 1908 | 15 |
Where it was found
16 records with coordinates.
Found alongside
Rock formations
States & provinces
| Region | Records | Share |
|---|---|---|
| Wyoming | 8 | 50% |
| Montana | 3 | 19% |
| Alberta | 2 | 12% |
| New Mexico | 1 | 6% |
| Saskatchewan | 1 | 6% |
| South Dakota | 1 | 6% |
| Country | Records | Share |
|---|---|---|
| United States | 13 | 81% |
| Canada | 3 | 19% |
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 |
|---|---|---|---|
| Struthiosaurus | 83.6–66 Ma | Romania, Austria | 23 |
| Edmontonia | 83.6–66 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 38837 · method