This is one of the toe bones of what was to prove to be an enormous dinosaur.
Rodolfo had recognized that the bone was from a meat-eater, and the following year he persuaded Phil Currie to join him in Patagonia, to try and find the rest of the skeleton. When we got there, we actually found the level where the bones were coming from. As we dug in that level, we realized there was a good part of a skeleton there. It far surpassed our expectations. Phil and Rodolfo thought the bones belonged to the giant carnivore Giganotosaurus. But as they examined their new discoveries, they noticed that the bones had different shapes from those of Giganotosaurus. These differences in the shape of the bones are a clue for a paleontologist to identify a new species.