palaeoecological, and palaeogeographical significance

The study of the microfauna of the lower member of the Cárdenas Formation occurring in the Cárdenas Basin (San Luis Potosí, NE México) has been carried out at the type-locality of Lepidorbi-toides minima Dovillé. A re-examination of the larger foraminifera sampled in this locality, in addi-tion to t...

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Bibliographic Details
Main Authors: Esmeralda Caus, Yvette Tambareau, Jean-paul Colin, Marcelo Aguilar, Josep-maria Bernaus, Antonio Gomez-garrido, Stéphane Brusset
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
foraminifera
ostracoda
Upper Cretaceous
biostratigraphy
palaeogeography
Planktonic foraminifera
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.533.3070
http://satori.geociencias.unam.mx/19-2/(5)Caus.pdf
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Summary:The study of the microfauna of the lower member of the Cárdenas Formation occurring in the Cárdenas Basin (San Luis Potosí, NE México) has been carried out at the type-locality of Lepidorbi-toides minima Dovillé. A re-examination of the larger foraminifera sampled in this locality, in addi-tion to the study of the associated planktonic foraminifera and ostracodes, suggest a deposition in an open marine environment with terrigenous input during the middle-upper Campanian (Globo-truncana ventricosa Zone and/or calcarata Zones). These preliminary results might be useful to pre-cise the geological setting of the Cárdenas Formation. Moreover, the comparison of the studied mi-crofauna with other Upper Cretaceous Tethyan ones have led to establish its strong similarities with the microfauna found in the Caribbean realm and the U.S. Gulf Coastal Plain but its tenuous Euro-pean affinities.

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