About Tyrannosaurus fossils
Tyrannosaurus is a genus of theropods, the mostly meat-eating group. The database records 2 species of it: Tyrannosaurus mcraeensis and Tyrannosaurus rex.
The 85 finds on the map come from 3 countries. The United States has the most, with 78 (92%). Within the United States the most finds are in North Dakota (23), Montana (20), Wyoming (14), South Dakota (11) and 2 more.
The rock formation with the most finds is called Hell Creek, with 49. The rocks are 83.6 to 66 million years ago, in the Cretaceous period.
Extinct genus of theropod dinosaurs. (Description from Wikidata, CC0.)
Read about Tyrannosaurus on Wikipedia.
- 85finds
- 3countries
- 83.6oldest, million years ago
- 66youngest, million years ago
10% of these finds are marked approximate in the database, so their dots may sit some way from the real site.
Which countries have Tyrannosaurus fossils?
| Country | Finds | Share |
|---|---|---|
| United States | 78 | 92% |
| Canada | 6 | 7% |
| Mexico | 1 | 1% |
US states
- North Dakota (23)
- Montana (20)
- Wyoming (14)
- South Dakota (11)
- Colorado (7)
- New Mexico (3)
Rock formations that produced Tyrannosaurus
A formation is a named body of rock. These are the ones with the most Tyrannosaurus finds.
| Formation | Finds |
|---|---|
| Hell Creek | 49 |
| Lance | 12 |
| Denver | 6 |
| Ferris | 4 |
| Frenchman | 2 |
| Scollard | 2 |
| Dinosaur Park | 1 |
| Fox Hills | 1 |
| Fruitland/Kirtland | 1 |
| Hall Lake | 1 |
Other dinosaurs found in United States
- Richardoestesia (239)
- Triceratops (166)
- Saurornitholestes (148)
- Allosaurus (147)
- Paronychodon (141)
- Camarasaurus (138)
- Iguanodon (132)
- Troodon (103)
- Stegosaurus (86)
- Edmontosaurus (85)
More to explore
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.
Questions about Tyrannosaurus
Where was Tyrannosaurus found?
Tyrannosaurus fossils are recorded in the Paleobiology Database from United States, Canada and Mexico. Most of the 85 finds on this map (78) are from United States. The rock formation with the most finds is the Hell Creek (49).
How old are Tyrannosaurus fossils?
Finds of Tyrannosaurus on this map date from 83.6 to 66 million years ago, which is the Cretaceous period. Ages are ranges, because rock layers are dated to a stage and not to a single year.
Where can I see Tyrannosaurus fossils near me?
Open the map and press Near me to list the nearest dinosaur finds and the most notable dinosaurs found around you. Remember that a dot shows where scientists recorded a find, not where you can dig: many fossil sites are on private or protected land, so check the rules before collecting and never dig on protected sites.