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First evidence of Ediacaran-Fortunian elliptical body fossils in the Brioverian series of Brittany (NW France)

Didier Neraudeau 1 Marie-Pierre Dabard 1 Abderrazak El Albani 2 Romain Gougeon 1 Arnaud Mazurier 3 Anne-Catherine Pierson-Wickmann 1 Marc Poujol 1 Jean-Paul Saint Martin 4 Simona Saint-Martin 4
1 GR - Géosciences Rennes
2 IC2MP - Institut de Chimie des Milieux et Matériaux de Poitiers
3 ERM - Societe Etudes Recherches Matériaux
4 CR2P - Centre de recherche sur la Paléobiodiversité et les Paléoenvironnements
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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https://hal-insu.archives-ouvertes.fr/insu-01718522
Contributor : Isabelle Dubigeon <>
Submitted on : Tuesday, February 27, 2018 - 2:39:03 PM
Last modification on : Wednesday, September 2, 2020 - 3:18:51 AM

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INSU | CNRS | UNIV-POITIERS | GR | IC2MP | GR1 | UNIV-RENNES1 | GR-3T | GR-PPDB | INC-CNRS | OSUR | UNIV-RENNES | GR-NBG | SORBONNE-UNIVERSITE | CR2P | MNHN | SU-SCIENCES

Citation

Didier Neraudeau, Marie-Pierre Dabard, Abderrazak El Albani, Romain Gougeon, Arnaud Mazurier, et al.. First evidence of Ediacaran-Fortunian elliptical body fossils in the Brioverian series of Brittany (NW France). Lethaia, Wiley, 2018, 51 (4), pp.513-522. ⟨10.1111/let.12270⟩. ⟨insu-01718522⟩

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