Zhenyuanlong

Zhenyuanlongmeaning "Zhenyuan's dragon", from Chinese Pinyin 龙 lóng "dragon" is a genus of dromaeosaurid dinosaur from the Yixian Formation of Liaoning, China. It lived in the early Cretaceous period, about 125 million years ago. 

There is just one specimen.Junchang Lü & Stephen L. Brusatte 2015. A large, short-armed, winged dromaeosaurid (Dinosauria: Theropoda) from the early Cretaceous of China and its implications for feather evolution. Scientific Reports 5: 11775. Gill, Victoria 2015. Dinosaur find: Velociraptor ancestor was 'winged dragon'. BBC News Science & Environment.   It is estimated the skeleton would have been about 165 centimetres (5.41 ft) long when complete. That means the animal was too large to have flown, especially since early flight was, almost certainly, less efficient than the flight of modern birds. It would surely have looked more like a bird than a modern reptile. This is shown in most reconstructions of dinobirds.

This type specimen has a nearly complete skeleton with traces of feathers, including long tail feathers and large wings. This specimen is the first evidence of well-developed feathers in a large, non-flying dromaeosaur. The feathers probably had two functions: temperature control and signalling.

 References 

Category:Dromaeosauridae

Category:Feathered dinosaurs