Correlation of Ordovician regional chitinozoan biozonations

Paris, F., Verniers, J., Achab, A., Albani, R., Ancilletta, A., Asselin, E., Chen, X., Fatka, O., Grahn, Y., Molyneux, S., Nõlvak, J., Samuelsson, J., Sennikov, N. V., Soufiane, A., Wang, X., Winchester-Seeto, T.