Genus · Hadrosauridae · Cretaceous
Hypacrosaurus
Named by Brown 1913
Hypacrosaurus lived 83.6–66 million years ago, during the Campanian to Maastrichtian stages of the Late Cretaceous. The Paleobiology Database lists 37 fossil records for it from 2 countries (Canada and United States) — the 30th most of the 99 genera on this site.
Where it sits in time
Key facts from the records
- The Two Medicine Formation supplies 43% of its records, followed by the Horseshoe Canyon Formation.
- Troodon appears in 14% of the collections that hold Hypacrosaurus; Saurornitholestes in 8%.
- Its stage range spans about 17.6 million years (15th longest of 99); it is the 8th best-recorded of the 21 ornithopods here.
2 accepted species
| Species | Named by | Records |
|---|---|---|
| Hypacrosaurus stebingeri | Horner and Currie 1994 | 17 |
| Hypacrosaurus altispinus | Brown 1913 | 16 |
Where it was found
37 records with coordinates.
Found alongside
Rock formations
States & provinces
| Region | Records | Share |
|---|---|---|
| Alberta | 22 | 59% |
| Montana | 15 | 41% |
| Country | Records | Share |
|---|---|---|
| Canada | 22 | 59% |
| United States | 15 | 41% |
Records by stage
Well-dated records, by the stage of their mid-point age.
Depositional settings
Other ornithopods of its time
Same group, overlapping stage range, not found in the same collections.
| Genus | Age | Country | Records |
|---|---|---|---|
| Edmontosaurus | 72.1–66 Ma | United States, Canada | 85 |
| Thescelosaurus | 83.6–66 Ma | United States, Canada | 55 |
| Zalmoxes | 83.6–66 Ma | Romania, Austria | 44 |
| Saurolophus | 72.1–66 Ma | Mongolia, Canada | 38 |
| Rhabdodon | 83.6–66 Ma | France, Spain | 37 |
| Corythosaurus | 83.6–72.1 Ma | Canada, United States | 29 |
| Kritosaurus | 83.6–72.1 Ma | United States, Canada | 25 |
| Telmatosaurus | 72.1–66 Ma | Romania, France | 23 |
Also from these formations
Data: PBDB taxon 56405 · method