New palaeontological data from the organic-rich layers of the Bathonian of the Grands Causses (France) |
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| Authors: | Fabien Knoll Gilles Cuny Pierre-Olivier Mojon Raquel López-Antoñanzas |
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| Institution: | 1. Museo Nacional de Ciencias Naturales-CSIC, C/ José Gutiérrez Abascal 2, 28006 Madrid, Spain;2. University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom;3. Statens Naturhistoriske Museum, Øster Voldgade 5-7, 1350 København K, Denmark;4. Rue Girardet 68, 2400 Le Locle, Switzerland;5. University of Bristol, Queen''s Road, Bristol BS8 1RJ, United Kingdom |
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| Abstract: | The palaeontological content (charophytes and vertebrates) of organic-rich layers from the Middle Jurassic (Bathonian) of the Grands Causses at Mostuéjouls (Aveyron, France) has been examined. It is rich in gyrogonites of Porochara douzensis. The vertebrates of the lower layer include a single hybodontiform tooth, “semionotiform” teeth and scales, and one pycnodontiform tooth whereas the upper layer has yielded one hybodontiform tooth, a variety of actinopterygian remains (mostly Caturus sp. and indeterminate pycnodontiforms) and a few possible reptile remains. The variation in fauna between the two layers is ascribed to a different degree of marine influence. |
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| Keywords: | Porochara Hybodus Lepidotes Pycnodontiformes Caturus Bathonian |
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