The meteorite impact on Mexico's Yucatan Peninsula may have led to the extinction of dinosaurs about 65 million years ago.
The fossils that were discovered in South America were upto 10 metres in size. Scientists are looking for more conclusive evidence in the find.
"We were missing a piece," Marcelo Leppe, director of the Chilean Antarctic Institute (INACH), told Reuters about the fossil.
Scientists expect to find large mammals and carnivores in the region. "We knew where there were large mammals, there would also be large carnivores, but we hadn't found them yet," INACH director Marcelo Leppe said.