RT Journal Article T1 Ostrácodos Tortonienses del Sector Central de la Cuenca del Guadalquivir (Sur de España) T1 Tortonian ostracodcs in the central sector of the Guadalquivir basin (S. Spain) A1 Ruiz Muñoz, Francisco A1 Abad de los Santos, Manuel A1 Pendón Martín, José Gabriel A1 González-Regalado Montero, María Luz A1 Tosquella Angrill, Josep AB This paper analyzes the lithostratigraphic features and the ostracode assemblages of the Upper Tortonian deposits located in the central sector of the Guadalquivir basin. Seven facies were defined, being deposited in fluvial to upper bathyal palaeoenvironments. Three main ostracode associations (infralittoral, circalittoral, upper bathyal) are defined, indicating a transgressive cycle throughout this period PB Sociedad Geológica de España YR 2003 FD 2003 LK http://hdl.handle.net/10272/9009 UL http://hdl.handle.net/10272/9009 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 29 may 2026