The case for the Global Stratotype Section and Point (GSSP) for the base of the Norian stage
Author(s): Hounslow, M.W., Bachmann, G.H., Balini, M., Benton, M.J., Carter, E.S., Konstantinov, A.G., Golding, M.L., Krystyn, L., Kürschner, W., Lucas, S.G., McRoberts, C.A., Muttoni, G., Nicora, A., Onoue, T., Orchard, M.J., Ozsvárt, P., Paterson, N.W., Richoz, S., Rigo, M., Sun, Y., Tackett, L.S., Kağan Tekin, U., Wang, Y., Zhang, Y. and Zonneveld. J.P.