Tyrannosaurus Rex's 'smaller cousin' discovered
A new species of dinosaur described as Tyrannosaurus Rex's "smaller cousin from the north" has been discovered.
An analysis of 70-million-year-old fossilised skull remains discovered in northern Alaska has shown them to be from a new pygmy Tyrannosaurus, according to research published in the journal PLOS ONE.
In this graphic, A is the Nanuqsaurus hoglundi and B is the Tyrannosaurus Rex
Scientists examined fragments of the skull roof, maxilla and jaw, and concluded that the species, named Nanuqsaurus hoglundi, had an adult skull length of 25 inches (63.5 centimetres), less than half the size of the 60 inch (152.4 centimetre) skull of a T Rex.