Changyuraptor

Changyuraptor is a genus of "four-winged", predatory dinosaurs. It is known from a single fossil specimen representing the species Changyuraptor yangi, which was discovered from Early Cretaceous (125 million year old) deposits in Liaoning Province, China.[1]  C. yangi belongs to the group of dromaeosaurid theropod dinosaurs called the Microraptoria.[1]

At the time of its discovery, C. yangi was the largest four-winged dinosaur known[1] [2]  and among the largest Mesozoic flying paravians, volant true birds seldomly approaching its size.[3]