The report of the Argentine Scientific and Technical Research Council (CONICET) announced on October 9 that the fossil was found in the eastern province of Mendoza.
The skeleton may belong to the oldest dinosaur, or the closest relative to the dinosaurs discovered to this day, according to scientists at the University of Washington (USA).
The high concentration of sedimentary mercury reinforces the rising dinosaur hypothesis that dominates the Earth after a series of volcanic events erupted 200 million years ago.