Teratopodus

Teratopodus (meaning "monstrous foot") is an ichnogenus of titanosaurian sauropod footprint. It includes a single species, T. malarguensis, known from prints found in the Late Cretaceous Anacleto Formation of Argentina. The Teratopodus tracks represent some of the best sauropod pes tracks currently known from South America.

Description
The trackway was created by two titanosaur individuals, one of which was about 11 m long, while the other was about 14 m long. Analysis of the fossils shows that the dinosaurs walked from an area of humid ground to a more flooded area.

Paleoenvironment
Several titanosaurs are known from the Anacleto Formation, including Pitekunsaurus, Narambuenatitan, Barrosasaurus, and Neuquensaurus. One of these dinosaurs potentially could have made the Teratopodus prints. Remains of the ornithopod Gasparinisaura and the theropods Abelisaurus  and Aucasaurus have also been recovered from the formation.