STRATI 2013 pp 61-63 | Cite as

Differential Effects of Bioturbation on Benthic Foraminiferal Distribution Across the Cretaceous–Palaeogene (K–Pg) Boundary at Bidart (Southwestern France)

  • Laia AlegretEmail author
  • Francisco J. Rodríguez-Tovar
  • Alfred Uchman
Conference paper
Part of the Springer Geology book series (SPRINGERGEOL)


To assess the role of tracemakers in the reworking of benthic foraminifera across the Cretaceous–Palaeogene (K–Pg) interval, we studied benthic foraminifera present in the material infilling trace fossils (Planolites, Thalassinoides, and Zoophycos) and in the surrounding sediment observed in the uppermost Maastrichtian in the Bidart section (southwestern France). Deposition took place in the upper part of the slope during the uppermost Cretaceous and lower Danian at Bidart, as inferred from benthic foraminifera from the background sediment (not affected by burrows). Our results support the significance of tracemakers for reworking benthic foraminiferal assemblages, as previously suggested by calcareous nannofossil assemblages.


Bioturbation Cretaceous–Palaeogene interval Benthic foraminifera 



This research was funded by projects Consolider CGL 2007-63724 and CGL2011-23077 (Spanish Ministry of Science and Innovation—FEDER).


  1. Alegret, L., Kaminski, M. A., & Molina, E. (2004). Paleoenvironmental recovery after the Cretaceous/Paleogene boundary crisis: evidence from the marine Bidart section (SW France). Palaios,19, 574–586.CrossRefGoogle Scholar
  2. Rodríguez-Tovar, F. J., Uchman, A., Molina, E., & Monechi, S. (2010). Bioturbational redistribution of Danian calcareous nannofossils in the uppermost Maastrichtian across the K-Pg boundary at Bidart, SW France. Geobios,43, 569–579.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Laia Alegret
    • 1
    Email author
  • Francisco J. Rodríguez-Tovar
    • 2
  • Alfred Uchman
    • 3
  1. 1.Departamento Ciencias de la Tierra and Instituto Universitario de Ciencias Ambientales de Aragón—IUCAUniversidad de ZaragozaZaragozaSpain
  2. 2.Departamento de Estratigrafía y Paleontología, Facultad de CienciasUniversidad de GranadaGranadaSpain
  3. 3.Institute of Geological SciencesJagiellonian UniversityKrakówPoland

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