Genus · Ornithopods · Jurassic
Nanosaurus
Named by Marsh 1877
Nanosaurus lived 154.8–145 million years ago, during the Kimmeridgian to Tithonian stages of the Late Jurassic. The Paleobiology Database lists 32 fossil records for it from 1 country (United States) — the 36th most of the 99 genera on this site.
Where it sits in time
Key facts from the records
- Most of what is known comes from one rock unit: 100% of its records are from the Morrison Formation.
- Every record is from United States; Wyoming alone has 26 of them.
- Allosaurus appears in 91% of the collections that hold Nanosaurus; Camarasaurus in 91%.
- Its stage range spans about 9.8 million years (56th longest of 99); it is the 10th best-recorded of the 21 ornithopods here.
1 accepted species
Nanosaurus has a single accepted species in PBDB.
| Species | Named by | Records |
|---|---|---|
| Nanosaurus agilis | Marsh 1877 | 26 |
Where it was found
32 records with coordinates.
Found alongside
Rock formations
States & provinces
| Region | Records | Share |
|---|---|---|
| Wyoming | 26 | 81% |
| Colorado | 5 | 16% |
| Utah | 1 | 3% |
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 |
|---|---|---|---|
| Gryposaurus | 199.5–72.1 Ma | Canada, United States | 31 |
| Dryosaurus | 154.8–145 Ma | United States, France | 24 |
Also from these formations
Data: PBDB taxon 38738 · method