via All That's Interesting

Dinosaurs don’t stop fascinating us. They were mysterious creatures that maybe we would never fully understand or even discover all of the kinds. Whenever scientists find a new clue about dinosaurs, this creates a lot of interest, as happened with the most recent one discovered.

This new finding is a great way for scientists to be closer to understanding how carnivorous dinosaurs, similar to Tyrannosaurus Rex, used their senses to hunt. Paleontologists in Argentina found an 80 million-year-old dinosaur skull in almost perfect condition.

The discovery was by accident back in 2015 when the scientists were looking for other fossils in the area of the city of Rincón de Los Sauces. They were searching for a totally different kind of dinosaur but they sighted diverse kinds of bones popping out of the dirt that caught their attention immediately. However, the study ended recently this year.

Surprisingly, the skull preserved its bumps, horns, and crests, and allowed them to identify it and name it as a Llukalkan aliocraniun, which means the one who causes fear and unusual skull. Even though it wasn’t fully completed, there were a lot of remaining parts of the skull, including the articulations.

It was part of the late Cretaceous period when the Gondwana continent was full of carnivorous dinosaurs. Apparently, the dinosaur had such a frightening look that this would permit it to scare its prey, so they believe it was the number one predator in the area. They looked similar to a T-rex and were over 16 feet long.

Still, the large claws and the sharp teeth were only some of the things that this dinosaur used to hunt their food. It seems like they also counted with some kind of amazing super-hearing that was as powerful as modern crocodiles and that made them the most dangerous predator in the food chain in the areas now known as Africa, India, Antarctica, South America, and Australia.

The great hearing was provided thanks to an air-filled sinus pocket in the ear zone that worked along with the advanced sense of smell. Basically, the cavities gave them a unique hearing range and this is the only type of dinosaur that presented this characteristic, explained Federico Gianechini, who was in charge of the investigation.

They believe that these dinosaurs were one of the last evolutionary species that appeared just before they were all extinct and that there could be other kinds of dinosaurs that had similar hunting mechanisms. It opens a window to all of the unknown diversity of dinosaurs that remain all across the world.