Upper Sinemurian-Pliensbachian calcareous nannofossil biostratigraphy of the E Rodiles section (Asturias, N Spain): A reference section for the connection between the Boreal and Tethyan Realms

1. Fraguas, Á.
2. Comas-Rengifo, M.J.
3. Goy, A.
4. Gómez, J.J.