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 primarily a braided river system, containing fossils of the theropods Buitreraptor and Giganotosaurus, as well as other sauropods including the rebbachisaurid Limaysaurus.