A5015411092- Paleontology and Stratigraphy of Fossils
- Geological formations and processes
- Fossil Insects in Amber
- Plant Diversity and Evolution
- Geology and Paleoclimatology Research
- Paleontology and Evolutionary Biology
- Marine Biology and Ecology Research
- Evolution and Paleontology Studies
- Plant and animal studies
- Geological and Geophysical Studies Worldwide
- Echinoderm biology and ecology
- Plant and Fungal Species Descriptions
- Insect and Arachnid Ecology and Behavior
- Geological and Geochemical Analysis
- Ichthyology and Marine Biology
- Marine and coastal plant biology
- Pleistocene-Era Hominins and Archaeology
- Coleoptera Taxonomy and Distribution
- Archaeological and Geological Studies
- Geological and Geophysical Studies
- Ecology and Vegetation Dynamics Studies
- Cephalopods and Marine Biology
- Botanical Research and Applications
- Scarabaeidae Beetle Taxonomy and Biogeography
- Hymenoptera taxonomy and phylogeny
Centre National de la Recherche Scientifique
2015-2024
Université de Rennes
2014-2024
Géosciences Rennes
2015-2024
Université de Bourgogne
1991-2020
Institut des Sciences de la Terre
2020
Muséum national d'Histoire naturelle
1995-1998
Abstract A significant portion of Mesozoic amber is fully opaque. Biological inclusions in such are invisible even after polishing, leading to potential bias paleoecological and phylogenetic studies. Until now, studies using conventional X-ray microtomography focused on translucent or semi-opaque amber. In these cases, organisms interest were visualized prior analyses. It was recently demonstrated that propagation phase contrast synchrotron imaging techniques powerful tools access opaque...
Amber usually contains inclusions of terrestrial and rarely limnetic organisms that were embedded in the places they lived amber forests. Therefore, it has been supposed could not have preserved marine organisms. Here, we report discovery amber-preserved microfossils. Diverse diatoms as well radiolarians, sponge spicules, a foraminifer, spine larval echinoderm found Late Albian Early Cenomanian samples southwestern France. The highly fossiliferous resin solidified ≈100 million years ago on...
The investigation of microorganisms preserved in amber from Charente-Maritime (southwestern France) provides new insights into the mid-Cretaceous forest ecology. Amber localities Archingeay-Les Nouillers and Cadeuil is unique due to plethora microinclusions macroinclusions as well preservation litter organisms. Soil such actinomycetes, sheathed prokaryotes, carnivorous fungi (Ascomycota), algae, testate amoebae nematodes indicate that resin solidified terrestrial or limnetic-terrestrial...
ABSTRACT The teeth of six dinosaur taxa (Carcharodontosauridae indet., Dromaeosauridae Troodontidae Brachiosauridae Iguanodontoidea and Nodosauridae indet.) are identified described from the early Cenomanian Charentes region, western France. composition paleoecology this coastal, insular fauna is discussed. assemblage shares affinities with Asiamerican Gondwanan faunas. This clarifies highlights role European islands in paleobiogeography Cretaceous dinosaurs.
Abstract: Eucalyptolaurus depreii gen. et sp. nov. is proposed for angiosperm leaves newly collected from uppermost Albian – lowermost Cenomanian of Charente‐Maritime (western France). They consist simple, narrow, elongate laminas with entire margins and intramarginal veins. The epidermal cells adaxial cuticle shows small, rounded, blunt papillae outward that protrude inward fuse together as rolls along parallel to the margins, while bears brachyparacytic stomatal apparatus exhibit sunken...
Plants and insects are the two dominant groups in terrestrial ecosystems, insect damage on fossil plants is only direct evidence documenting past ecological history between these two, hyperdiverse groups. We describe, analyze, interpret plant–insect interactions of a lower Cenomanian paleoforest from western France – Puy-Puy Quarry Nouvelle-Aquitaine Region. examined 1605 leaves, axes, reproductive material bennettitalean, pinalean, ginkgoalean gymnosperms; lauralean magnolialean...
Gerontoformica cretacica n. gen., sp., until now the oldest known ant, is described after a putative worker specimen, from Uppermost Albian amber of France. Although its characters are those modern ants, it does not fit in any recent ant subfamilies.