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Université Claude Bernard Lyon I, UFR Sciences de la Terre, UMR 5125 ‘Paléoenvironnements et Paléobiosphère’ du CNRS, 43, Boulevard du 11 novembre 1918, 69622 Villeurbanne cedex, France
Université Claude Bernard Lyon I, UFR Sciences de la Terre, UMR 5125 ‘Paléoenvironnements et Paléobiosphère’ du CNRS, 43, Boulevard du 11 novembre 1918, 69622 Villeurbanne cedex, France
CONICET, Universidad Nacional de La Pampa, Cátedra de Paleontologı́a I, Facultad de Ciencias Exactas y Naturales, Uruguay 151, 6300 Santa Rosa, Argentina