Exceptional conservation deposits (Konservat-Lagerstätten) are windows into the biodiversity of the past and are a important source of information on a wide range of paleobiological interactions. There are also concentration deposits (Konzentrat-Lagerstätten) which are reference points for their richness in species and/or individuals.
Coordinator: Sylvain Charbonnier
Exceptional conservation deposits (Konservat-Lagerstätten) are windows into the biodiversity of the past and are a important source of information on a wide range of paleobiological interactions. There are also concentration deposits (Konzentrat-Lagerstätten) which are reference points for their richness in species and/or individuals. Each type of deposit provides different and sometimes complementary information. Fossils from several Konservat-Lagerstätten and Konzentrat-Lagerstätten will be analyzed in order to derive systematic, paleobiological, paleoecological and paleoenvironmental information.
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Precambrian deposits from France and Romania yielding Ediacaran organisms preserved by microbial veils. The discovery of possible traces of locomotion in the Precambrian of Romania constitutes a major advance in the knowledge of these primordial faunas.
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Cambrian deposits of the Chengjiang fauna (China) delivering exceptionally preserved organisms in fine sediments, visibly flattened, but nevertheless preserving 3D details. These deposits are also among the oldest documenting the Cambrian explosion. Work on the hydrodynamics of some bivalve arthropods has shown a unique swimming pattern that no longer exists in nature today.
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Mesozoic deposits delivering arthropod faunas preserved in volume in concretions (La Voulte) and/or in 2D in fine sediments (lithographic limestones of Solnhofen, Lebanon, limestones of Osteno). The discovery of preserved crustaceans with their eggs and reproductive organs has allowed a better understanding of the evolution of reproductive strategies in certain groups since the Middle Jurassic.
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Paleogene deposits of the Paris Basin corresponding to exceptional concentrations of molluscs in a regional hotspot context of paleobiodiversity. The spectacular richness of this malacofauna, one of the richest in the world (more than 5000 species), sheds essential light on the knowledge of the Tethyan biodiversity, marked by a recording bias in other regions, the assemblages being less well preserved there.
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Residual color patterns of Meso-Cenozoic molluscs: exploitation for the evaluation of biodiversity and for the understanding of pigment diagenesis. The study of shell pigments by fluorescence gives access to the composition of residual pigments via non-intrusive techniques. In Vetigastropoda, it has allowed the precise identification of uro-porphyrins.
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Paleoflora with numerous fossils preserved in three dimensions (sometimes down to the cellular level). Fossilized wood, fruits, seeds and flowers from these deposits remain numerous to be studied to complete the description of the flora around the PETM transition.
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Origins and processes of exceptional preservation across different Paleozoic, Mesozoic and Cenozoic deposits. Mineralogical and elemental characterization of arthropod soft parts fossilized in carbonate nodules has led to the understanding that exceptional preservation requires, against all expectations, rapid biodegradation of tissues. Moreover, mineralization is determined by the original composition of the tissues.
LIBCRUCEMIX
Gisements à conservation exceptionnelle du Liban : crustacés, céphalopodes et microfossiles
- Financement : Actions Thématiques du Muséum (ATM 2023)
- Projet de Denis Audo, en collaboration avec Sylvain Charbonnier, Marie-Béatrice Forel et Isabelle Kruta
MILEX
Exploration de la paléobiodiversité des milieux extrêmes : les suintements froids du Jurassique supérieur du Sud-Est de la France
- Financement : Actions Thématiques du Muséum (ATM 2022)
- Projet de Marie-Béatrice Forel et Sylvain Charbonnier, en collaboration avec Denis Audo, Christian Gaillard (Université Lyon 1) et Gale Luka (Université de Ljubjana)
PRESERV
Photoluminescence des porphyrines utilisée pour révéler des marqueurs colorés préservés chez les Vetigastropoda post-paléozoïques
- Financement DIM MAP (Région Ile-de-France) 2021
- Postdoctorat de Luca Polacci en collaboration avec Mathieu Thoury (Ipanema) et Frédéric Marin (Biogéosciences Dijon)
MICMAC
Les micro- et macro-arthropodes marins du Trias de Slovénie : diversité et paléoenvironnements
- Financement : Actions Thématiques du Muséum (ATM 2022)
- Projet de Marie-Béatrice Forel, en collaboration avec Sylvain Charbonnier et Thomas Laville
LACRELI
Lagerstätten du Crétacé du Liban : arthropodes, céphalopodes et microfossiles
- Financement : Actions Thématiques du Muséum (ATM 2020)
- Projet de Sylvain Charbonnier, en collaboration avec Marie-Béatrice Forel, Isabelle Kruta et Thomas Laville
PyrEx
Pyritisation Expérimentale d'Animaux Marins : étude des processus organiques et inorganiques
- Financement DIM MAP (Région Ile-de-France) 2019
- Postdoctorat de Giliane Odin en collaboration avec Sylvain Charbonnier, Sylvie Derenne et Thanh Thuy Nguyen Tu (UMR 7619 METIS)
MIRCoV
Acquisition d'images de méso- et microfossiles pour la recherche et les collections virtuelles
- Financement DIM MAP (Région Ile-de-France) 2018
- Projet de Dario De Franceschi en collaboration avec Anaïs Boura.
DILUVIAN
Deciphering hidden Information with LUminescence of Vetigastropoda using new Imaging ANalytical methods
- Financement DIM MAP (Région Ile-de-France) 2017
- Projet de Didier Merle et de Mathieu Thoury (IPANEMA, Synchrotron SOLEIL)
FosPLi
Fossilisation et préservation exceptionnelle des Plattenkalks du Liban
- Financement : Projets fédérateurs du Département Origines & Evolution du MNHN 2019
- Projet de Clément Jauvion en collaboration avec Sylvain Charbonnier et Sylvain Bernard (UMR 7590 IMPMC)
BIOMESS
La crise du Messinien revisitée : quelle biodiversité des fonds méditerranéens juste avant les dépôts évaporitiques
- Financement : Actions Thématiques du Muséum (ATM 2019)
- Projet de Didier Merle en collaboration avec Jean-Paul Saint Martin, Sylvain Charbonnier, Annachiara Bartolini et Simona Saint Martin
Cénomanien de la Vienne
Étude de la diversité d’un gisement de bois fossiles à préservation exceptionnelle
- Financement : Fondation Lisea pour la Biodiversité (stage de M2, printemps 2018)
- Projet de Anaïs Boura, Dario De Franceschi, Denise Pons, Ninon Robin, Bernard Gomez (LGL, UMR 5276), Géraldine Garcia & Xavier Valentin (PALEVOPRIM, UMR7262).