Alamosaurus (al-ah-mow-sore-us) was possibly the largest dinosaur to ever live in North America. It lived during the Late Cretaceous in what is now the Ojo Alamo Formation.
Characteristics[]
Alamosaurus estimates vary. Some suggest it could grow almost as large or larger than the famous Argentinosaurus. However, more recent estimates suggest a significantly smaller, although still very large, size. In 2020, the largest Alamosaurus specimen was estimated to be 49 meters in length and 110,000 kg in mass.
As a relative of Saltasaurus, Alamosaurus might have possessed bony armor.
The living creature[]
Adult Alamosaurus probably had no natural predators. Large Tyrannosaurs would have been present in the formation, and possibly preyed on smaller individuals.
Importance[]
Aside from being one of the largest dinosaurs, Alamosaurus also lived during the Late Cretaceous, long after most North American Sauropods were extinct.