A5063036929- Echinoderm biology and ecology
- Marine and coastal plant biology
- Paleontology and Stratigraphy of Fossils
- Marine Biology and Ecology Research
- Ocean Acidification Effects and Responses
- Coral and Marine Ecosystems Studies
- Morphological variations and asymmetry
- Evolution and Paleontology Studies
- Genomics and Phylogenetic Studies
- 3D Surveying and Cultural Heritage
- Methane Hydrates and Related Phenomena
- Isotope Analysis in Ecology
- Anatomy and Medical Technology
- Marine animal studies overview
- Marine Bivalve and Aquaculture Studies
- Astro and Planetary Science
- History and advancements in chemistry
- Geological and Geophysical Studies
- Conservation Techniques and Studies
- Marine and environmental studies
National Museum of Natural History
2023-2024
Smithsonian Institution
2023-2024
Sorbonne Université
2015-2024
Université Paris 1 Panthéon-Sorbonne
2023-2024
University of Fribourg
2018-2023
Centre de recherche en paléontologie - Paris
2016-2023
Centre National de la Recherche Scientifique
2015
Muséum national d'Histoire naturelle
2015
Since the diversification process cannot be directly observed at human scale, it has to studied from information available, namely extant taxa and fossil record. In this sense, phylogenetic trees including both fossils are most complete representations of that one can get. Such reconstructed molecular morphological data, some extent. Among temporal such trees, ages by far precisely known (divergence times inferences calibrated mostly with fossils). We propose here a method compute likelihood...
Brisingida Fisher 1928 is one of the seven currently recognised starfish orders, and least known taxa as being exclusive deep-sea inhabitants. Modern expeditions revealed their common occurrences in various settings including seamounts, basins hydrothermal vent peripheral, underlining necessity clarifying global diversity phylogeny. In this study, we present a comprehensive molecular phylogeny which encompasses highest taxonomic to date. DNA sequences (COI, 16S, 12S 28S) were obtained from...
Assessments of reef sediments in the North Ari Atoll (Maldives) were conducted 2015 and 2018 on reefs three islands with different management strategies: community, resort, uninhabited. Indices applied Foraminifera Reef Assessment Monitoring Index (FI) Sediment Constituents (SI). Both indices are based shells or fragments functional groups, which for FI foraminiferal SI sediment components. The is considered to be an indicator water quality quality, community structure, processes such as...
Abstract A new phylogenetic analysis of the superorder Forcipulatacea is presented. one three major groups sea stars (Asteroidea: Echinodermata), composed 400 extant species. The sampled taxa are thought to represent morphological diversity group. Twenty-nine forcipulate were belonging Asteriidae, Stichasteridae, Heliasteridae, Pedicellasteridae, Zoroasteridae and Brisingida. Specimens dissected with bleach. Detailed description skeleton anatomy ossicles investigated using scanning electron...
The Amphistegina Bleaching Index (ABI) was applied to three Maldivian reefs in the Rasdhoo and North Ari Atolls 2018, during normal sea surface temperature conditions. This dataset then compared with a 2015, pre-coral bleaching study. results provide context for verification application of ABI outlining photo-inhibitory stress status coral outside Florida Reef Tract where it originally developed. sampling periods encompass different seasons regimes. 2015 field preceeded El Niño induced, mass...
Abstract The complete ontogenetic development of an asteroid skeleton has never been described formally for any species. Here, we describe in detail the post‐metamorphic ontogeny Zoroaster fulgens Thomson, 1873. major novelty our work is description patterns plate addition, internal ossicles, as well variability ossicles according to their position along series. Seven specimens collected Rockall Basin (North Atlantic) were dissected with bleach and anatomy was documented using a scanning...
AbstractThe family Zoroasteridae is a clade of extant sea stars found exclusively in deep marine environments (i.e. bathyal deeper than 200 m). In the fossil record, seven species have been compared and/or assigned to Zoroasteridae, on time span ranging from Middle Jurassic Miocene. This study describes new taxon, Viridisaster guerangeri gen. et sp. nov., Cenomanian Le Mans (Sarthe, France) and reappraises two Mesozoic species, Terminaster cancriformis Early Cretaceous Protothyraster...
Révision du genre Benthogenia Fisher, 1911 (Asteroidea, Echinodermata), avec la description d'une nouvelle espèce et de l'anatomie des ossicules. Porcellanasteridae Sladen, 1883 est une famille d′étoiles mer vivant ensevelie dans le sédiment environnements bathyaux abyssaux. Parmi les douze genres actuellement reconnus au sein cette famille, seul à avoir été signalé profondeurs inférieures 1000 m. diffère tous autres porcellanastéridés par présence d′organes cribriformes entre toutes ses...
The superorder Forcipulatacea is a major clade of sea stars with approximately 400 extant species across three orders (Forcipulatida, Brisingida, Zorocallida). Over the past century, systematics have undergone multiple revisions by various authors, some considering numerous families such as Asteriidae, Zoroasteridae, Pedicellasteridae, Stichasteridae, Heliasteridae, Labidiasteridae, and Neomorphasteridae, while others recognized only two (
Abstract. Forcipulatacea is one of the three major groups extant sea stars (Asteroidea: Echinodermata), composed 400 species, but only known from fewer than 25 fossil species. Despite unequivocal members being recognized in early Jurassic, evolutionary history this group still subject debate. Thus, identification any new representatives significant. We here reappraise Ophidiaster davidsoni de Loriol and Pellat 1874 Tithonian Boulogne, France, which was assigned to another group, Valvatacea,...
Abstract Diversification rates are estimated from phylogenies, typically without fossils, except in paleontological studies. By nature, rate estimations depend heavily on the time data provided which divergence times and (when used) fossil ages. Among these temporal data, ages by far most precisely known (divergence inferences calibrated with fossils). We propose a method to compute likelihood of phylogenetic tree fossils only information is Testing our approach simulated shows that maximum...