Four-winged dinosaur is 'biggest ever'
By James Morgan Science reporter, BBC News
A new four-winged dinosaur has been discovered, with exceptionally long feathers on its tail and "hindwings".Changyuraptor yangi was a gliding predator which lived in the Cretaceous period in what is now Liaoning, China.Its remarkable tail feathers - measuring up to 30cm - are the longest in any non-avian dinosaur.The tail would have acted as a pitch control structure reducing descent speed... which could be critical to a safe landing or precise attack on prey.This unusual plumage helped the creature to slow down during flight and land safely, say scientists writing in Nature Communications. C. yangi is a new species of microraptorine, a group related to early avians.These ancient creatures offer clues to the origin of flight - and the transition from feathered dinosaurs to birds.
Read rest see pic here: http://www.bbc.co.uk/news/science-environment-28295571