A strange pigeon-sized dinosaur that roamed the planet more than 150 million years ago was the oldest known relative of birds, say scientists.
The new species 'Epidexipteryx hui' had large teeth that could rip prey apart and a strange anatomy including long, ribbon-like tail feathers - suggesting the plumage was purely ornamental rather than for flight.
An artist's impression of an Epidexipteryx. The creature may have used its tail feathers to attract a mate or scare off rivals