Evidence of an abrupt environmental disruption during the mid-Paleocene biotic event (Zumaia section, western Pyrenees)

1. Bernaola, G.
2. Baceta, J.I.
3. Orue-Etxebarria, X.
4. Alegret, L.
5. Martín-Rubio, M.
6. Arostegui, J.
7. Dinarès-Turell, J.