Dinosaur fossils in Wyoming
The Paleobiology Database records 1,040 non-avian dinosaur finds in Wyoming, from 69 genera. The oldest is Ahvaytum bahndooiveche from the Carnian age, about 237 million years old. The youngest is Edmontosaurus annectens from the Late Maastrichtian age, as young as about 66 million years. Ages are the range the database gives for the rocks, so a find can be tens of millions of years across.
- 1,040finds
- 69genera
- 237oldest, million years ago
- 66youngest, million years ago
It ranks 1st of 36 US states on the map by number of finds, with 19% of the finds in the United States. The most recorded dinosaurs are Camarasaurus (66), Allosaurus (63) and Triceratops (62). The rock formation with the most finds is called Morrison, with 527.
Which dinosaurs were found in Wyoming?
The genera with the most finds here:
| Dinosaur | Finds |
|---|---|
| Camarasaurus | 66 |
| Allosaurus | 63 |
| Triceratops | 62 |
| Stegosaurus | 40 |
| Diplodocus | 39 |
| Apatosaurus | 28 |
| Nanosaurus | 26 |
| Edmontosaurus | 25 |
| Camptosaurus | 20 |
| Paronychodon | 18 |
Rock formations with dinosaur finds in Wyoming
| Formation | Finds |
|---|---|
| Morrison | 527 |
| Lance | 232 |
| Ferris | 120 |
| Cloverly | 91 |
| Mesaverde | 15 |
| Almond | 10 |
| Harebell | 5 |
| Medicine Bow | 5 |
| Meeteetse | 5 |
| Sundance | 4 |
Other US states to explore
- Montana (985)
- New Mexico (832)
- Utah (602)
- Colorado (484)
- Texas (448)
- North Dakota (237)
- Arizona (167)
- South Dakota (167)
- New Jersey (70)
- Oklahoma (62)
See the sea floor where marine reptiles swam: oceanfloormap.com →
Before you go fossil hunting. A dot shows where a find was recorded, not where you may dig. Many fossil sites are on private or protected land and collecting rules differ by country. Check the rules before collecting and never dig on protected sites.