1. EARLY ORDOVICIAN SHIFT IN REEF CONSTRUCTION FROM MICROBIAL TO METAZOAN REEFS
2. The oldest bryozoan reefs: a unique Early Ordovician skeletal framework construction
3. An, T.X., Zhang, F., Xiang, W.D., Zhang, Y.Q., Xu, W.H., Zhang, H.J., Jiang, D.B., Yang, C.S., Lin, L.D., Cui, Z.T. & Yang, X.C., 1983. The Conodonts of North China and the Adjacent Regions. Science Press, Beijing, 223. pp. (in Chinese with English abstract).
4. Phanerozoic Paleoclimate