Genus · Hadrosauridae · Cretaceous
Kritosaurus
Named by Brown 1910
Kritosaurus lived 83.6–72.1 million years ago, during the Campanian stage of the Late Cretaceous. The Paleobiology Database lists 25 fossil records for it from 2 countries (United States and Canada) — the 50th 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 7 formations; the largest share, 36%, is from the Kirtland Formation.
- Agujaceratops appears in 9% of the collections that hold Kritosaurus; Alamosaurus in 9%.
- Its stage range spans about 11.5 million years (36th longest of 99); it is the 13th best-recorded of the 21 ornithopods here.
2 accepted species
| Species | Named by | Records |
|---|---|---|
| Kritosaurus navajovius | Brown 1910 | 7 |
| Kritosaurus horneri | Hunt and Lucas 1993 | 0 |
Where it was found
25 records with coordinates.
Found alongside
Rock formations
States & provinces
| Region | Records | Share |
|---|---|---|
| New Mexico | 17 | 68% |
| Texas | 5 | 20% |
| Alberta | 2 | 8% |
| Montana | 1 | 4% |
| Country | Records | Share |
|---|---|---|
| United States | 23 | 92% |
| Canada | 2 | 8% |
Records by stage
Well-dated records, by the stage of their mid-point age.
Other ornithopods of its time
Same group, overlapping stage range, not found in the same collections.
| Genus | Age | Country | Records |
|---|---|---|---|
| Thescelosaurus | 83.6–66 Ma | United States, Canada | 55 |
| Zalmoxes | 83.6–66 Ma | Romania, Austria | 44 |
| Hypacrosaurus | 83.6–66 Ma | Canada, United States | 37 |
| Rhabdodon | 83.6–66 Ma | France, Spain | 37 |
| Gryposaurus | 199.5–72.1 Ma | Canada, United States | 31 |
| Corythosaurus | 83.6–72.1 Ma | Canada, United States | 29 |
| Parasaurolophus | 83.6–72.1 Ma | United States, Canada | 20 |
| Lambeosaurus | 83.6–72.1 Ma | Canada | 19 |
Also from these formations
Data: PBDB taxon 53195 · method