Genus · Caenagnathidae · Cretaceous
Chirostenotes
Named by Gilmore 1924
Chirostenotes lived 83.6–66 million years ago, during the Campanian to Maastrichtian stages of the Late Cretaceous. The Paleobiology Database lists 28 fossil records for it from 2 countries (United States and Canada) — the 45th 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 5 formations; the largest share, 50%, is from the Hell Creek Formation.
- Thescelosaurus appears in 22% of the collections that hold Chirostenotes; Troodon in 19%.
- Its stage range spans about 17.6 million years (15th longest of 99); it is the 16th best-recorded of the 32 theropods here.
1 accepted species
Chirostenotes has a single accepted species in PBDB.
| Species | Named by | Records |
|---|---|---|
| Chirostenotes pergracilis | Gilmore 1924 | 8 |
Where it was found
28 records with coordinates.
Found alongside
Rock formations
States & provinces
| Region | Records | Share |
|---|---|---|
| Montana | 14 | 50% |
| Alberta | 9 | 32% |
| Texas | 3 | 11% |
| South Dakota | 2 | 7% |
| Country | Records | Share |
|---|---|---|
| United States | 19 | 68% |
| Canada | 9 | 32% |
Records by stage
Well-dated records, by the stage of their mid-point age.
Depositional settings
Other theropods of its time
Same group, overlapping stage range, not found in the same collections.
| Genus | Age | Country | Records |
|---|---|---|---|
| Tyrannosaurus | 72.1–66 Ma | United States, Canada | 85 |
| Tarbosaurus | 72.1–66 Ma | Mongolia, China | 56 |
| Ornithomimus | 83.6–66 Ma | United States, Canada | 35 |
| Albertosaurus | 83.6–66 Ma | Canada, United States | 32 |
| Gallimimus | 72.1–66 Ma | Mongolia, Uzbekistan | 30 |
| Masiakasaurus | 72.1–66 Ma | Madagascar | 29 |
| Majungasaurus | 72.1–66 Ma | Madagascar | 25 |
| Daspletosaurus | 83.6–72.1 Ma | United States, Canada | 21 |
Also from these formations
Data: PBDB taxon 38555 · method