A new dinosaur species, Jian changmaensis, has been discovered in a fossil bed in the Changma Basin of Gansu province, China. This dinosaur, a cousin of the velociraptor, is distinguished by its long feathers on both its front and back limbs, suggesting it could glide using four 'wings'. The fossil, which includes a significant piece of its upper arm bone, indicates that Jian changmaensis had an estimated wingspan of about four feet, similar to that of a barn owl. Researchers believe this dinosaur was a carnivore that likely preyed on the numerous prehistoric birds found in the same fossil bed. The discovery of Jian changmaensis provides valuable insights into the ecological dynamics of the region during the Jurassic and Cretaceous periods, highlighting the relationship between early birds and their non-avian dinosaur relatives. This finding contributes to our understanding of the evolutionary history of birds, which are the only surviving lineage of dinosaurs today.