In Argentina, experts have discovered the remains of unknown species of dinosaur.
This species existed 75 million years ago. They are from the family of carnivorous during that time period.
Its quite similar to the Tyrannosaurus with powerful jaws, very small front legs and large hind legs.
Its skull had crest, horns and some part sticking out from its surface. According to the analysis of experts these species had better sense of hearing as compared to other known species of dinosaur.
Strange thing about it had cavities in the ear that could have given it a great range of hearing.
Apart from it, its keen sense of smell would have made it a very good predator.