For the most part, the Candeleros represents an ancient braided river system. Besides Andesaurus, the formation also contains fossils of the theropods Buitreraptor and Giganotosaurus, as well as other sauropods including the rebbachisaurid Limaysaurus.
The Candeleros formation is a location rich in dinosaur fossils, showcasing an ancient river system and containing diverse species such as the theropod Buitreraptor, the giant theropod Giganotosaurus, and the sauropods Limaysaurus.