Acknowledgements

I would like to thank C. Bierman and G. Bertotti for their support and guidance during the fieldwork in the Southern Pyrenees. Furthermore, I would like to thank T. Geel and J. Smit for determination of some microfossils. Also, I would like to thank J. Smit for accompanying me in the field. Finally, I would like to thank G. Rosenbaum for the excellent orange cream cake and encouraging me to write this paper.