RT Journal Article T1 Un nivel de concentracjon de briozoos en el Cuisiense inferior ; de Esdolomada (Formacion Murillo, Valle del Isabena) T1 A bryozoan concentration bed at Esdolomada lower Cuisian (Murillo Formation, Isabena) A1 Reguant, Salvador AB The presence of a condensation bed, consisting of a dense lumachellic marly limestone with a nearly monospecific bryozoan (Teichopora clayata Gregory) is indicative of a change in tendency from transgressive to regressive within the transgressive interval constituting the Murillo Formation in the Southcentral Pyrenees PB Sociedad Geológica de España YR 1997 FD 1997 LK http://hdl.handle.net/10272/10336 UL http://hdl.handle.net/10272/10336 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026