Cenomanian bivalves from Batna Mountains (Saharan Atlas, NE Algeria)

Authors

  • Riadh Aouissi Department of Geology, University of Larbi Ben M’hidi, Oum el Bouaghi, Laboratory of Geological Research (LRG), B.P.12, 23000 Annaba, Algeria. aouissi_riadh@hotmail.com (Corresponding author)
  • Sihem Salmi-Laouar Department of Geology, University of Badji Mokhtar, Laboratory of Geological Research (LRG), B.P.12, 23000 Annaba, Algeria. ssalmit@yahoo.fr
  • Gamal M. El Qot Geology Department, Faculty of Sciences, Benha University, Benha, Egypt. g_elqot@hotmail.com
  • El Sayed M. Moneer Geology Department, Faculty of Sciences, Al-Azhar University, Cairo, Egypt. sayedmoneer@azhar.edu.eg

DOI:

https://doi.org/10.4072/rbp.2022.4.02

Abstract

In the Batna Mountains, the Cenomanian Marnes de Smail Formation yield fossiliferous deposits mostly dominated by bivalves. Thirty-five bivalve species were identified, belonging to nine orders, 19 families and 26 genera. Five of them are mentioned for the first time from the Cenomanian of the study area (i.e., Nucula ? cf. margaritifera Douvillé, Barbatia (Barbatia) aegyptiaca Fourtau, Cucullaea trigona Seguenza, Arctica inornata d’Orbigny, and A. cordata Sharpe). Their distribution provided interesting insights on the marine paleoenvironment of the Cenomanian times. The paleobiogeographic distribution of the studied bivalves corresponds to the Tethys Realm. 

Keywords: Bivalvia, Cretaceous, Cenomanian, Algeria, Batna, Tethys.

RESUMO – Na Cordilheira de Batna, a Formação de Marnes de Smail consiste em depósitos fossilíferos ricos em uma macrofauna bentônica diversificada, dominada principalmente por bivalves. Trinta e cinco espécies de bivalves são identificadas, representando nove ordens, 19 famílias e 26 gêneros, respectivamente. Entre os táxons identificados, cinco deles são descritos pela primeira vez para o Cenomaniano da área de estudo (i.e., Nucula ? cf. margaritifera Douvillé, Barbatia (Barbatia) aegyptiaca Fourtau, Cucullaea trigona Seguenza, Arctica inornata d’Orbigny, e A. cordata Sharpe). Sua distribuição fornece informações interessantes sobre o ambiente marinho dos tempos cenomanianos. A distribuição paleobiogeográfica dos bivalves estudados corresponde ao Reino de Tétis.

Palavras-chave: Bivalvia, Cretáceo, Cenomaniano, Argélia, Batna, Tétis.

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Published

2022-12-31

How to Cite

Aouissi, R., Salmi-Laouar, S., El Qot, G. M., & Moneer, E. S. M. (2022). Cenomanian bivalves from Batna Mountains (Saharan Atlas, NE Algeria). Revista Brasileira De Paleontologia, 25(4), 255–273. https://doi.org/10.4072/rbp.2022.4.02

Issue

Vol. 25 No. 4 (2022): Revista Brasileira de Paleontologia

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Articles

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