First evidence of Ediacaran–Fortunian elliptical body fossils in the Brioverian series of Brittany,NW France |
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| Authors: | Didier Néraudeau Marie‐Pierre Dabard Abderrazak El Albani Romain Gougeon Arnaud Mazurier Anne‐Catherine Pierson‐Wickmann Marc Poujol Jean‐Paul Saint Martin Simona Saint Martin |
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| Affiliation: | 1. Université de Rennes 1, UMR CNRS 6118, Rennes, France;2. Université de Poitiers, UMR CNRS IC2MP 7285 Hydrasa, UFR SFA, Poitiers, France;3. Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK, Canada;4. Muséum National d'Histoire Naturelle, Département Origines et Evolutions, UMR 7207 CR2P/MNHN/CNRS/SU, Paris, France |
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| Abstract: | Body fossils are described for the first time from the Upper Brioverian (Ediacaran–Fortunian) deposits of Central Brittany (NW France). The material consists of a dozen of specimens preserved on two slates, recently collected in a quarry in Saint‐Gonlay. The fossils, centimetric in size, have an elliptical and acuminated outline, with a peripheral bulge but without conspicuous concentric or radial lines. These body fossils are preserved in slates that are locally rich in grazing traces, sometimes associated with microbial mats. The sedimentological characteristics of these deposits correspond to a shallow marine shelf environment, with a low to moderate hydrodynamism. Such findings, in concomitance with previous ichnological discoveries, unravel the potential of the Brioverian strata from Brittany as a new locality to provide answers on Ediacaran and early Cambrian biocenoses. |
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| Keywords: | Brioverian Ediacaran elliptical body fossils Fortunian NW France |
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