The Jiufotang Formation (Chinese: 九佛堂组; pinyin: jiǔfótáng zǔ) is an Early Cretaceous geological formation in Chaoyang, Liaoning which has yielded fossils of feathered dinosaurs, primitive birds, pterosaurs, and other organisms (see Jehol Biota).

The exact age of the Jiufotang has been debated for years, with estimates ranging from the Late Jurassic to the Early Cretaceous.

New uranium-lead dates reveal the formation is deposited in the Aptian stage of the Early Cretaceous.

"[20] A longipterygid Cathayornis C. aberransis An enantiornithine C. caudatus Nomen dubium[22] C. yandica "Partial skeleton.

Also present in the Yixian Formation C. jianchangensis Liaoning Dalianraptor D. cuhe Nomen dubium, named from a forged artificially assembled specimen.