"A new super-predator dinosaur that roamed the Earth 80 million years ago has been discovered in southern Utah.
It was closely related to its slightly larger relative, Tyrannosaurus rex, but lived earlier, making it the largest living land predator of its time.
Growing to about 30ft (9m) long, the predator has been named Lythronax argestes which means 'king of gore'.
The research, published in the journal Plos One, highlights once more that the age of discovery is far from over.
The team also hopes this new find will help uncover what the climate was like towards the end of the age of dinosaurs.
'It's always exciting to find new species but what's really significant is what these species tell us about their ancient world,' said Randall Irmis, co-author of the study at the Natural History Museum of Utah, US.
'This was a very different place 80 million years ago. It was a very lush, wet, tropical environment and there were no polar ice caps at the time.'" - Melissa Hogenboom, Science Reporter, BBC News, November 6, 2013