Trace fossils from the Middle and Upper Eocene (Bartonian–Priabonian) molasse deposits of the Pamplona Basin (Navarre, western Pyrenees): palaeoenvironmental implications

1. Astibia, H.
2. Rodríguez-Tovar, F.J.
3. Díaz-Martínez, I.
4. Payros, A.
5. Ortiz, S.