Martínez-Pérez, C., Valenzuela-Ríos, J.I., Navas-Parejo, P., Liao, J.-C., and Botella, H. 2011. Emsian (Lower Devonian) Polygnathids (Conodont) succession in the Spanish Central Pyrenees. Journal of Iberian Geology 37, 1, 45–64. DOI:https://doi.org/10.5209/rev_JIGE.2011.v37.n1.4