The remains of Anteavis crurilongus were found in the Ishigualasto geological formation, which is one of the few places on the planet where the bones of early dinosaurs have been preserved. The age of the discovered specimen was determined to be at least 12 years, indicating that it was already an adult individual.
A new species of megaraptor—a predatory dinosaur with powerful claws—was also previously discovered in Argentina, which was found holding the bones of an ancient crocodile in its mouth.
