Members of the Argentinian Naval Prefecture found traces of a bipedal dinosaur in Ramos Mexia Lake in the town of Villa El Chocon.
According to reports, specialists estimate that the footprints are between 96 and 99 million years old.
Footage distributed by the Argentinian Naval Prefecture on Wednesday shows two soldiers walking on the lake, which recently has been experiencing a great decline in water level. This has allowed the footprints to be seen on the southern shore of the lake.
Juan Canale, director of the Museum of El Chocon, said in a statement to local media that they were medium-sized animals, about six metres (19.6 feet) long by three metres (9.8 feet) high.