RT Journal Article T1 El límite Cretácico/Terciario con foraminíferos planctónicos en Osinaga y Músquiz (Navarra, Pirineos) T1 The Cretaceous/Tertiary boundary with planktic foraminifera at Osinaga andMusquiz (Navarre, Pyrenees) A1 Arenillas, J. I. A1 Arz, José Antonio A1 Molina, Eustoquio AB High resolution planktic foraminiferal biostratigraphy across the K/T boundary at Osinaga and Musquiz (Navarre, Pyrenees) allows us to recognise a small hiatus located just at the boundary. The hiatus affects the uppermost part of the P. hariaensis Bizone, the Cb. cretacea Biozone and the lo wermost part of the Pv. eugubina Biozone, being smaller at Osinaga than at Musquiz. Due to the hiatus the planktic foraminifera extintion model seems to be more catastrophic than in other more continuous sections PB Sociedad Geológica de España YR 1996 FD 1996 LK http://hdl.handle.net/10272/11052 UL http://hdl.handle.net/10272/11052 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026