Genus · Diplodocidae · Jurassic
Barosaurus
Named by Marsh 1890
Barosaurus lived 154.8–145 million years ago, during the Kimmeridgian to Tithonian stages of the Late Jurassic. The Paleobiology Database lists 19 fossil records for it from 2 countries (United States and Zimbabwe) — the 65th 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: 95% of its records are from the Morrison Formation.
- Allosaurus appears in 89% of the collections that hold Barosaurus; Camarasaurus in 83%.
- Its stage range spans about 9.8 million years (56th longest of 99); it is the 13th best-recorded of the 19 sauropodomorphs here.
1 accepted species
Barosaurus has a single accepted species in PBDB.
| Species | Named by | Records |
|---|---|---|
| Barosaurus lentus | Marsh 1890 | 3 |
Where it was found
19 records with coordinates.
Found alongside
Rock formations
States & provinces
| Region | Records | Share |
|---|---|---|
| Wyoming | 9 | 47% |
| Utah | 5 | 26% |
| Colorado | 2 | 11% |
| South Dakota | 2 | 11% |
| Mashonaland North | 1 | 5% |
| Country | Records | Share |
|---|---|---|
| United States | 18 | 95% |
| Zimbabwe | 1 | 5% |
Records by stage
Well-dated records, by the stage of their mid-point age.
Depositional settings
Other sauropodomorphs of its time
Same group, overlapping stage range, not found in the same collections.
| Genus | Age | Country | Records |
|---|---|---|---|
| Giraffatitan | 154.8–145 Ma | Tanzania | 42 |
| Cetiosaurus | 168.2–125.77 Ma | United Kingdom, Morocco | 30 |
| Mamenchisaurus | 165.3–145 Ma | China, Mongolia | 24 |
| Brontosaurus | 149.2–145 Ma | United States | 23 |
| Brachiosaurus | 154.8–145 Ma | United States, Tanzania | 20 |
| Dicraeosaurus | 154.8–145 Ma | Tanzania, Zimbabwe | 19 |
| Omeisaurus | 165.3–145 Ma | China | 13 |
Also from these formations
Data: PBDB taxon 38666 · method