Taxonomical and biostratigraphical significance of the North African radiolitid rudist bivalve Praeradiolites biskraensis (Coquand, 1880)

  1. JOSE MARIA PONS1,
  2. ENRIC VICENS1,
  3. FETTOUMA CHIKHI-AOUIMEUR2,
  4. HASSEN ABDALLAH3

Article first published online: 11 MAY 2012

DOI: 10.1111/j.1475-4983.2012.01133.x

Issue

Palaeontology

Palaeontology

Volume 55, Issue 3, pages 677–695, May 2012

Additional Information

How to Cite

PONS, J. M., VICENS, E., CHIKHI-AOUIMEUR, F. and ABDALLAH, H. (2012), Taxonomical and biostratigraphical significance of the North African radiolitid rudist bivalve Praeradiolites biskraensis (Coquand, 1880). Palaeontology, 55: 677–695. doi: 10.1111/j.1475-4983.2012.01133.x

Author Information

  1. 1

    Departament de Geologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; e-mails: josepmaria.pons@uab.cat and enric.vicens@uab.cat

  2. 2

    Département de Géologie, Faculté des Sciences de la Terre, Université H. Boumédienne, Bab Ezzouar, Algiers, Algeria; e-mail: fetaouimeur@gmail.com

  3. 3

    Laboratoire de Géoénergie, CRTEn, Technopole Borj Cédria, Hammam-Lif, Tunisia; e-mail: hassen.abdallah@inrst.rnrt.tn

Publication History

  1. Issue published online: 11 MAY 2012
  2. Article first published online: 11 MAY 2012
  3. Typescript received 15 June 2010; accepted in revised form 11 January 2012

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Keywords:

  • Maghrebites gen. nov.;
  • Upper Cenomanian;
  • North Africa;
  • radiolitids;
  • taxonomy;
  • biostratigraphy

Abstract:  The revision of the radiolitid rudist bivalve Praeradiolites biskraensis (Coquand), including shell morphology and structure, taxonomical status, and palaeogeographical and stratigraphical distribution, was undertaken. We studied Coquand’s collection, other specimens from the type locality, Col de Sfa, and other Algerian fossil localities, as well as recently collected material from the Gafsa region in Tunisia. A neotype from Col de Sfa is proposed. The stratigraphical distribution of the species is bracketed in the Upper Cenomanian, using the distribution of co-occurring ammonites in Tunisia and microfossils in Algeria. The palaeogeographical distribution is verified for Algeria and Tunisia based on all records in North Africa. Survey of the taxonomical status and problems of related radiolitid genera has resulted in revised diagnoses of Praeradiolites Douvillé, Eoradiolites Douvillé, Sphaerulites Lamarck and Radiolites Lamarck and revealed problems with Radiolites fleuriaui d’Orbigny, which is being the type species of Praeradiolites. Maghrebites gen. nov. is proposed for the North African radiolitid rudist Praeradiolites biskraensis (Coquand).

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