Upper Jurassic Radiolaria from the Vocontian basin of SE France |
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| Authors: | Taniel Danelian Salim Lahsini Marc De Rafélis |
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| Institution: | 1.Micropaléontologie,Université Pierre-et-Marie-Curie. – C.N.R.S-UMR 5143 Tour 46–56, 5° étage,Paris Cedex 05;2.Biominéralisations et Paléoenvironnements,Université Pierre-et-Marie-Curie – FR32. CEPAGE Tour 56–55,Paris Cedex 05 |
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| Abstract: | Two sections of the Vocontian basin (southeast France) were explored for their radiolarian content. Preservation in calcite impeded their extraction from the Châteauneuf d’Oze section, which is well dated by ammonites. Fortunately, oligospecific assemblages of pyritized radiolaria were yielded by twelve limestone beds of the Méouge section. In general, preservation worsens towards the top of the section. The extracted fauna is dominated by Nassellaria and more particularly by Archaeodictyomitridae, Pseudodictyomitridae and Williriedellidae. It is the first time that some species are reported outside their type area or from Western Tethys. Amongst the published zonations the scheme of Baumgartner et al. (1995a) is found to be the most useful and allows correlation of the studied part of the section with the mid-late Oxfordian to late Kimmeridgian-early Tithonian time interval. |
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