151358 20251017144626.0 doi 10.1344/GeologicaActa2021.19.7 sideral 127157 ART-2021-127157 eng Silva-Casal R. Systematics of lutetian larger foraminifera and magneto-biostratigraphy from the South Pyrenean Basin (Sierras exteriores, Spain) 2021 Access copy available to the general public Unrestricted A systematic description of the Eocene larger foraminifera recorded in the South Pyrenean Basin (Sierras Exteriores) is presented herein. The large dataset provided in this work includes Nummulites and Alveolina species, along with a variety of other porcellaneous and hyaline taxa with lesser biostratigraphic relevance. Most of the larger foraminifera described in this work correspond to the Lutetian (SBZ13 to SBZ16 biozones) interval, but late Ypresian (SBZ11, Cuisian) and early Bartonian (SBZ17) shallow benthic zones have also been identified. A new species, Idalina osquetaensis, is described. The systematic revision of middle to late Lutetian alveolines led to a reassessment of Alveolina fusiformis and the finding of two new precursor forms, described as Alveolina aff. fragilis and Alveolina aff. elongata. The new taxa fill in the gap existing so far in the middle to late Lutetian alveolinid biostratigraphy. Despite not being exclusive to SBZ16, these forms provide realiable biostratigraphic information in facies where Nummulites are not present. This realibility lies on the correlation of Nummulites and Alveolina biostratigraphic markers in the same sections and their calibration to the global time scale through magnetostratigraphy. Magnetostratigraphic calibration of described taxa is provided, along with an update of the SBZ calibration to the Geological Time Scale (Gradstein et al., 2012). info:eu-repo/semantics/openAccess by-sa https://creativecommons.org/licenses/by-sa/4.0/deed.es 1.067 2021 GEOLOGY 39 / 49 = 0.796 2021 Q4 T3 0.565 2021 Geology 2021 Q2 2.9 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Serra-Kiel J. Rodríguez-Pintó A. Pueyo Morer, E.L. Universidad de Zaragoza (orcid)0000-0002-0504-2352 Aurell Cardona, M. Universidad de Zaragoza (orcid)0000-0002-2430-7424 Payros A. 2000 428 Universidad de Zaragoza Dpto. Ciencias de la Tierra Área Geodinámica Interna 2000 280 Universidad de Zaragoza Dpto. Ciencias de la Tierra Área Estratigrafía 19, 7 (2021), [81 pp.] Geol. acta Geologica Acta 1695-6133 14932500 http://zaguan.unizar.es/record/151358/files/texto_completo.pdf Versión publicada 1880822 http://zaguan.unizar.es/record/151358/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:151358 articulos driver 2025-10-17-14:24:25 ARTICLE