Tratayenia
(Tratayenia rosalesi)

Discovered in Argentina and formally described in 2018, Tratayenia was a large megaraptoran theropod from the Late Cretaceous. 

Like other megaraptors, its most formidable weapons were its powerful forelimbs and enormous hand claws rather than its jaws — a hunting strategy quite unlike that of the more famous large theropods of the north!