RT Journal Article T1 Microestructuras en conchas de rudistas y Chondrodonta sp. del Complejo Urgoniano de Ereño (Bizkaia) T1 Microstructures in rudist and Chondrodonta sp. shells from the Urgonian Complex of Ereño (Bizkaia, BasqueCountry) A1 Damas Mollá, Laura A1 Aranburu Artano, Arantza A1 García Garmilla, Francisco AB Rudist and Chondrodonta sp. shells present in Ereño limestones show different responses to the influenceceof diagenetic fluids. The different microstructures of shells could be responsible for different ways followedby penetrating fluids. It seems to be a clear correlation between chemical analyses and shell microstructuretypes. In this way, whereas Chondrodonta sp. and requienid shells show the more resistant behaviour forinfluence of diagenetic fluids, the monopleurid and caprotinid ones are more intensity affected by diagenesis.The SEM studies reflect that less mechanical altered and more structurally hermetic shells, the lessdiagenetically affected YR 2008 FD 2008 LK http://hdl.handle.net/10272/8278 UL http://hdl.handle.net/10272/8278 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026