[i]Microraptor[/i] was the first genus of four-winged dinosaurs to be discovered. They were also the smallest dinosaurs, at only 40cm long. From their fossils they appear to have been extremely abundant. There is a good Wikipedia article on the genus which is very interesting. In this fossil the long feathers on the four limbs are very evident. For those interested in palaeontology, the Palaeozoological Museum Of China is absolutely outstanding. The museum is on three floors, the lower one for dinosaurs including several fully-mounted skeletons (the displays are a mix of real fossils and casts) and fossil fish, the next floor for more dinosaurs and birds, and the third for mammals. Really fascinating fossils here, although unfortunately all the signage is in Chinese apart for the scientific names. Visited September 2013.