RT Journal Article T1 Primeros datos bioestratigráficos de los grupos evaporíticos de la Cuenca de Fortuna (Cordillera Bética) T1 First biostratigraphic data of the evaporitic groups in the Fortuna Basin (Betic Cordillera) A1 Tent Manclús, José Enrique A1 Lancis, Carlos A1 Dinarès Turell, Jaume A1 Estévez, Antonio AB The present work offers the first biostratigraphic calibration based on calcareous nannoplankton of thethree evaporitic assemblages in the Rio Chicamo section. The A. primus FAD is registered at the upper partof the Sanel marls, above the lower gypsum, and bellow the Tale gypsum. The A. delicatus FAD, and the A.amplificus FAD occurs in the lower and upper part of the Chicamo Cycles, respectively, which allow tocalibrate the Chicamo Cycles reversal as the chron C3Ar. The Tortonian/Messinian boundary is found atthe Tale gypsum YR 2006 FD 2006 LK http://hdl.handle.net/10272/8514 UL http://hdl.handle.net/10272/8514 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026