Colonisation of disturbed deltaic paleoenvironments from the Early Cretaceous (Albian): Inferences from an exceptional record of the fern Ruffordia goeppertii (Dunker) Seward from northeastern Spain

1. Sender, L.M.
2. Villanueva-Amadoz, U.
3. Wappler, T.
4. Diez, J.B.
5. Cobos, A.