Genus · Stegosauridae · Jurassic
Stegosaurus
Named by Marsh 1877
Stegosaurus lived 154.8–145 million years ago, during the Kimmeridgian to Tithonian stages of the Late Jurassic. The Paleobiology Database lists 86 fossil records for it from 3 countries (United States, Portugal and China) — the 7th 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.
- It is one of the more widespread genera here: records from 3 countries, 26th of 99.
- Camarasaurus appears in 70% of the collections that hold Stegosaurus; Allosaurus in 70%.
- Its stage range spans about 9.8 million years (56th longest of 99); it is the best-recorded of the 14 armoured & plated dinosaurs here.
7 accepted species
| Species | Named by | Records |
|---|---|---|
| Stegosaurus stenops | Marsh 1887 | 9 |
| Stegosaurus ungulatus | Marsh 1879 | 5 |
| Diracodon laticeps | Marsh 1881 | 1 |
| Hypsirophus discurus | Cope 1878 | 1 |
| Stegosaurus duplex | Marsh 1887 | 1 |
| Stegosaurus sulcatus | Marsh 1887 | 1 |
| Stegosaurus armatus | Marsh 1877 | 0 |
Where it was found
86 records with coordinates.
Found alongside
Rock formations
States & provinces
| Region | Records | Share |
|---|---|---|
| Wyoming | 40 | 47% |
| Colorado | 24 | 28% |
| Utah | 12 | 14% |
| Oklahoma | 4 | 5% |
| Centro | 2 | 2% |
| New Mexico | 2 | 2% |
| Montana | 1 | 1% |
| Gansu | 1 | 1% |
| Country | Records | Share |
|---|---|---|
| United States | 83 | 97% |
| Portugal | 2 | 2% |
| China | 1 | 1% |
Records by stage
Well-dated records, by the stage of their mid-point age.
Depositional settings
Other armoured & plated dinosaurs of its time
Same group, overlapping stage range, not found in the same collections.
| Genus | Age | Country | Records |
|---|---|---|---|
| Dacentrurus | 154.8–145 Ma | Portugal, Spain | 31 |
| Kentrosaurus | 149.2–145 Ma | Tanzania | 27 |
Also from these formations
Data: PBDB taxon 38814 · method