About Alamosaurus fossils
Alamosaurus is a genus of sauropodomorphs, the long-necked group and its relatives. The database records one species of it: Alamosaurus sanjuanensis.
The 38 finds on the map come from 2 countries. The United States has the most, with 37 (97%). Within the United States the most finds are in New Mexico (22), Texas (11) and Utah (4).
The rock formation with the most finds is called Ojo Alamo, with 15. The rocks are 83.6 to 66 million years ago, in the Cretaceous period.
Extinct genus of huge titanosaurs. (Description from Wikidata, CC0.)
Read about Alamosaurus on Wikipedia.
- 38finds
- 2countries
- 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 Alamosaurus fossils?
| Country | Finds | Share |
|---|---|---|
| United States | 37 | 97% |
| Mexico | 1 | 3% |
US states
- New Mexico (22)
- Texas (11)
- Utah (4)
Rock formations that produced Alamosaurus
A formation is a named body of rock. These are the ones with the most Alamosaurus finds.
| Formation | Finds |
|---|---|
| Ojo Alamo | 15 |
| Javelina | 10 |
| Kirtland | 4 |
| North Horn | 4 |
| Black Peaks | 1 |
| Hall Lake | 1 |
| McRae | 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 Alamosaurus
Where was Alamosaurus found?
Alamosaurus fossils are recorded in the Paleobiology Database from United States and Mexico. Most of the 38 finds on this map (37) are from United States. The rock formation with the most finds is the Ojo Alamo (15).
How old are Alamosaurus fossils?
Finds of Alamosaurus 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 Alamosaurus 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.