Systematics of Lutetian larger foraminifera and magneto-biostratigraphy from the South Pyrenean Basin (Sierras Exteriores, Spain)
Silva-Casal, Roi (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà)
Serra-Kiel, Josep (Museu de Ciències Naturals de Barcelona. Departament de Paleontologia)
Rodríguez-Pintó, Adriana (Freelance Geologist consultant)
Pueyo, Emilio (Universidad de Zaragoza)
Aurell, Marcos (Universidad de Zaragoza. Departamento de Ciencias de la Tierra)
Payros, Aitor (Universidad del País Vasco. Departamento de Estratigrafía y Paleontología)

Fecha:	2020
Resumen:	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, Idalinaosquetaensis, is described. The systematic revision of middle to late Lutetian alveolines led to a reassessment of Alveolinafusiformis 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 Nummulitesand 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).
Ayudas:	Agencia Estatal de Investigación PID2019-105670GB-I00 Ministerio de Ciencia e Innovación CGL2017-85038-P Agencia Estatal de Investigación CGL2017-90632-REDT Ministerio de Economía y Competitividad CGL 2015-69805-P Ministerio de Economía y Competitividad CGL2014-54118-C2-2-R
Nota:	Acknowledgments. In memory of Josep Serra-Kiel, who unfortunately passed away during the writing of this article. During part of this work R. Silva-Casal was funded by a predoctoral grant of the Basque Government (BFI-2011-344). This study had financial support from projects PID2019-105670GB-I00, CGL2017-85038-P, CGL2017-90632-REDT, CGL 2015-69805-P and CGL2014-54118-C2-2-R of the Spanish Ministry of Science and Innovation (FEDER, EU), the Government of Aragón-FEDER 2014-2020 (Groups E18 and E0117R-GeoAp) and the Basque Government (project IT-930-16). We are grateful to Josep Tosquella and Esmeralda Caus and the editors for their constructive comments during the peer review process.
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	SBZ recalibration ; Middle Eocene ; Southern Pyrenees ; Paleogene biostratigraphy
Publicado en:	Geologica acta, Vol. 18 Núm. 2 (2020) , p. 1-XVII. (Articles) , ISSN 1696-5728

Adreça alternativa: https://raco.cat/index.php/GeologicaActa/article/view/36307
Adreça original: https://revistes.ub.edu/index.php/GEOACTA/article/view/36307

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