A5041115609- Paleontology and Stratigraphy of Fossils
- Marine Biology and Ecology Research
- Geology and Paleoclimatology Research
- Evolution and Paleontology Studies
- Cephalopods and Marine Biology
- Paleontology and Evolutionary Biology
- Marine and environmental studies
- Crustacean biology and ecology
- Subterranean biodiversity and taxonomy
- Parasite Biology and Host Interactions
- Marine and coastal plant biology
- Geological formations and processes
- Insect and Arachnid Ecology and Behavior
- Marine Invertebrate Physiology and Ecology
- Aquatic Invertebrate Ecology and Behavior
- Mollusks and Parasites Studies
- Fossil Insects in Amber
- Geological and Geochemical Analysis
- Protist diversity and phylogeny
- Spaceflight effects on biology
- Geological and Geophysical Studies
- Geological Formations and Processes Exploration
- Marine Ecology and Invasive Species
- Geological and Geophysical Studies Worldwide
- Marine and fisheries research
Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement
2016-2025
Université Claude Bernard Lyon 1
2016-2025
Centre National de la Recherche Scientifique
2016-2025
Université Jean Monnet
2015-2024
École Normale Supérieure de Lyon
2015-2024
Northwest University
2024
State Key Laboratory of Continental Dynamics
2024
Chang'an University
2024
National Institute of Genetics
2024
University of Chinese Academy of Sciences
2024
Research Article| August 01, 2010 Priapulid worms: Pioneer horizontal burrowers at the Precambrian-Cambrian boundary Jean Vannier; Vannier * 1UMR 5125 PEPS, Université de Lyon, Lyon 1, Bât. Géode, 2 rue Raphaël Dubois, F-69622 Villeurbanne Cedex, France *E-mail: jean.vannier@univ-lyon1.fr. Search for other works by this author on: GSW Google Scholar Ivan Calandra; Calandra France2Biozentrum Grindel und Zoologisches Museum, Universität Hamburg, Martin-Luther-King-Platz 3, D-20146 Germany...
Present-day ecosystems host a huge variety of organisms that interact and transfer mass energy via cascade trophic levels. When how this complex machinery was established remains largely unknown. Although exceptionally preserved biotas clearly show Early Cambrian animals had already acquired functionalities enabled them to exploit wide range food resources, there is scant direct evidence concerning their diet exact relationships. Here I describe the gut contents Ottoia prolifica, an abundant...
Although palaeontological evidence from exceptional biota demonstrates the existence of diverse marine communities in Early Cambrian (approx. 540–520 Myr ago), little is known concerning functioning ecosystem, especially its trophic structure and full range ecological niches colonized by fauna. The presence a zooplankton oceans still an open issue. Here we provide compelling that chaetognaths, important element modern zooplankton, were present Chengjiang with morphologies almost identical to...
Abstract Vision has revolutionized the way animals explore their environment and interact with each other rapidly became a major driving force in animal evolution. However, direct evidence of how ancient could perceive is extremely difficult to obtain because internal eye structures are almost never fossilized. Here, we reconstruct unprecedented resolution three-dimensional structure huge compound 160-million-year-old thylacocephalan arthropod from La Voulte exceptional fossil biota SE...
Waptia fieldensis Walcott, 1912 is one of the iconic animals from middle Cambrian Burgess Shale biota that had lacked a formal description since its discovery at beginning twentieth century. This study, based on over 1800 specimens, finds W. shares general characteristics with pancrustaceans, as previous authors suggested mostly overall aspect. The cephalothorax covered by flexible, bivalved carapace and houses pair long multisegmented antennules, palp-bearing mandibles, maxillules, four...
The anatomy of the bivalved arthropod Isoxys (Early and Middle Cambrian) is reconstructed, based on new evidence from soft parts exoskeletal design a critical review previous work. had long segmented body flanked with pair short antennules, followed by series 14 biramous appendages provided paddle-like exopods concealed under widely open carapace folded dorsally bearing cardinal spines. close resemblance between Recent pelagic crustaceans (halocyprid ostracods, larval stages malacostracans)...
We report the discovery of sipunculan worms from Lower Cambrian Maotianshan Shale, near Kunming (southwest China). Their identity is evidenced by general morphology animals (sausage-shaped body with a slender retractable introvert and wider trunk) other features, both external (e.g. perioral crown tentacles, hooks, papillae wrinkle rings on surface) internal (U-shaped gut, anus opening introvert-trunk junction). The three fossil forms (Archaeogolfingia caudata gen. et sp. nov.,...
Exceptional fossil specimens with preserved soft parts from the Maotianshan Shale (ca 520 Myr ago) and Burgess (505 biotas indicate that worldwide distributed bivalved arthropod Isoxys was probably a non-benthic visual predator. New lines of evidence come functional morphology its powerful prehensile frontal appendages that, combined large spherical eyes, are thought to have played key role in recognition capture swimming or epibenthic prey. The steering this achieved by beating multiple...
An updated reconstruction of the body plan, functional anatomy and life attitude bradoriid arthropod Kunmingella is proposed, based on new fossil specimens with preserved soft parts found in lower Cambrian Chengjiang Haikou (Yunnan, SW China) previous evidence. The animal has a single pair short antennae pointing towards front (a setal pattern indicates possible sensory function). following set seven appendages (each composed 5-segmented endopod leaf-like exopod fringed setae) poorly...
Abstract. Analysis of all relevant palaeontological and global geological data strongly supports the notion that representatives Silurian myodocope ostracods had pelagic lifestyles habitats they may well be, within Ostracoda, pioneer colonisers such environments. Morphological evidence (from fossil Recent myodocopes) combined with facies distributional concomitant faunal of, for example, Britain, France, Czechoslovakia, Sardinia, Australia China) endorses idea have undergone a benthic to...
Spinicaudatans and ostracods form two components of the diverse arthropod fauna from Montceau Lagerstätte (Stephanian, France). are represented by Montcestheria orri gen. sp. nov. Euestheria feysi nov., a single species, Carbonita aff. salteriana (Jones, 1862). Allied forms such as , cebennensis (Grand'Eury, 1890), all coeval localities in France, also described. has carapace features, external (possibly sexual) dimorphism, preserved soft parts (e.g. appendages, gut) resting eggs similar to...
Accurate information on the anatomy and ecology of worms from Cambrian Lagerstatten SW China is sparse. The present study two priapulid Anningvermis n. gen. Corynetis Lou & Hu, 1999 Lower Maotianshan Shale biota brings new concerning anatomical complexity, functional morphology lifestyles Early priapulids. Comparisons are made with Recent priapulids Sweden (live observations, SEM). cuspidate pharyngeal teeth (circumoral pentagons) most peculiar radiating oral crown added to very elongate...
Ecological significance of the arthropod fauna from Jurassic
Isoxys is a cosmopolitan bivalved arthropod genus known almost exclusively from Cambrian Konservat-Lagerstatten. Despite its wide geographical distribution in such sites of exceptional preservation, little was soft-part anatomy until recently when remains eyes and raptorial frontal appendages were discovered. This absence has precluded determination affinities. The new discovery soft parts led to two important hypotheses: (1) that related the ‘great-appendage’ arthropods (2) contained...