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STRATI 2013 pp 85-87 | Cite as

Early Eocene Cerithioidean Gastropods from a Subtropical Coast Environment (South–Central Pyrenees, Spain)

  • Stefano DominiciEmail author
  • Thorsten Kowalke
Conference paper
Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

The biodiversity of Eocene Cerithioidean gastropods from a subtropical marine littoral environment, including mangroves with Nypa palms, is documented from the Figols Group (FG) and the overlying Castigaleu Group (CG) of the Ager and the Tremp–Graus basins (south–central Pyrenees, Spain). The stratigraphic interval includes the middle and upper Ypresian, encompassing the early Eocene climatic optimum (EECO). The malacofauna comprises a rich association of possibly intertidal species, dominated by Potamididae, Batillariidae, Pachychilidae, and Cerithiidae, with subordinate Melanopsidae, Thiaridae, Diastomidae, and Pachymelaniidae. The subtidal fauna is dominated by Turritellidae. The Cerithioidea fossil distribution is interpreted according to their local palaeoenvironmental gradients and through their genus-level stratigraphic distributions and according to known molecular phylogeny, ecology, and geographical range of Recent forms. The Cerithioidean record during the Palaeogene is revised on a global scale to obtain insights into the evolution across the EECO of some of the most widespread intertidal tropical organisms. The results suggest that Potamididae were adapted to mangrove trees since their first important diversification in Western Tethys and that some early Eocene genera survive in Recent mangrove-fringed coasts. In addition, the Batillariidae are very abundant and widespread in intertidal assemblages, undergoing rapid early Eocene turnovers, but within genera unrelated to modern forms. EECO Pachychilidae lived in brackish water habitats, contrary to purely freshwater Recent species. Turritellidae display an environmental distribution in the early Eocene similar to their modern distribution.

Keywords

Palaeogene Ypresian Cerithioidea Shallow marine Ecological gradient Evolutionary diversification 

References

  1. Allmon, W. D. (1988). Ecology of Recent turritelline gastropods (Prosobranchia, Turritellidae): Current knowledge and paleontological implications. Palaios,3, 259–284.CrossRefGoogle Scholar
  2. Dominici, S., & Kowalke, T. (2007). Depositional dynamics and the record of ecosystem stability: Early Eocene coastal communities in the Pyrenean foreland, Spain. Palaios,22, 268–284.CrossRefGoogle Scholar
  3. Ellison, A. M., Farnsworth, E. J., & Merkt, R. E. (1999). Origins of mangrove ecosystems and the mangrove biodiversity anomaly. Global Ecology and Biogeography,8, 95–115.CrossRefGoogle Scholar
  4. Houbrick, R. S. (1993). Phylogenetic relationships and generic review of the Bittiinae (Prosobranchia: Cerithioidea). Malacologia,35, 261–313.Google Scholar
  5. Ozawa, T., Köhler, F., Reid, D. G., & Glaubrecht, M. (2009). Tethyan relicts on continental coastlines of the northwestern Pacific Ocean and Australasia: Molecular phylogeny and fossil record of batillariid gastropods (Caenogastropoda, Cerithioidea). Zoologica Scripta,38, 503–525.CrossRefGoogle Scholar
  6. Reid, D. G., Dyal, P., Lozouet, P., Glaubrecht, M., & Williams, S. T. (2008). Mudwhelks and mangroves: The evolutionary history of an ecological association (Gastropoda: Potamididae). Molecular Phylogenetics and Evolution,47, 680–699.CrossRefGoogle Scholar
  7. Ricklefs, R. E., Schwarzbach, A. E., & Renner, S. S. (2006). Rate of Lineage Origin Explains the Diversity Anomaly in the World’s Mangrove Vegetation. American Naturalist,168, 805–810.CrossRefGoogle Scholar
  8. Strong, E.E., Colgan, D.J., Healy, J.M., Lydeard, C., Ponder, W.F., & Glaubrecht, M. (2011). Phylogeny of the gastropod superfamily Cerithioidea using morphology and molecules. Zoological Journal Linnean Society 162, 43–89.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Sezione di Geologia e Paleontologia, Museo di Storia NauraleUniversità di FirenzeFlorenceItaly
  2. 2.Central Office of Research and TechnologyUniversity of KaiserslauternKaiserslauternGermany

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