New dinosaur species may be closest known relative of T rex

This predator would have been about the size of a double-decker bus

The newly-discovered dinosaur was roughly the same size as a T rex and also ate meat. Picture: Nick Longrich/University of Bath/PA

A new dinosaur species may be the closest known relative of Tyrannosaurus rex, a new study suggests.

The research reshapes scientists’ understanding of how the most famous dinosaur — T rex — might have first arrived in North America, by introducing its earliest known relative on the continent.