Rugose corals from the Gongguleleng Formation (Famennian), Northern Sinkiang (NW China).

Famennian rocks with deep water facies are very well developed in the north ern part of Junggar Basin, Northern Sinkiang (NW China). The Hongguleleng F ormation yields abundant rugose corals of the 'Cyathaxonia fauna' associate d with a lot of brachiopods, some ammonoids (Clymenids) and some conodonts. The assemblages of these fossils indicate a Famennian age for the Honggule leng Formation. The descriptions herein include fifteen species, among them two are new, belonging to ten genera. Some genera such as Amplexus, Gueric hiphyllum, Hebuhophyllum, Nicholsoniella, Cyathaxonia, Ufimia, Caninia and Petraiella are common in North Sinkiang and they show a close relationship during theFamennian with those of the NE of Siberia (Omolon Region), E of I nner Mongolia (Central Great Hinggan Mountains, NE China), Kazakhstan (Russ ian Federation), the Urals (Russian Federation), Holy Cross Mountains (Pola nd) and Thuringia Mountains (Germany).