The base of the Toarcian (Early Jurassic) in the Almonacid de la Cuba section (Spain). Ammonite biostratigraphy, magnetostratigraphy and isotope stratigraphy

1. Comas-Rengifo, M.J.
2. Gómez, J.J.
3. Goy, A.
4. Osete, M.L.
5. Palencia-Ortas, A.