Dreadnoughtus schrani

Dreadnoughtus is a genus of titanosaurian sauropod dinosaur containing a single species, Dreadnoughtus schrani. D. schrani is known from two partial skeletons discovered in Upper Cretaceous (Campanian to Maastrichtian; approximately 84–66 Ma) rocks of the Cerro Fortaleza Formation in Santa Cruz Province, Argentina.
https://www.nature.com/articles/srep06196