Geoscience environment de Toulouse

Faculty Member, Géosciences Environnement

Researcher

About

I am working on faunal diversifications and the interactions between geosphere and biosphere during Paleozoic. My paleontological research focuses on the blastozoan diversification processes. The first approach is the establishment of a phylogeny showing the relationships with contemporaneous echinoderms (e.g., crinoids, edrioasteroids). The result will be the proposition of a new classification for the subphylum Blastozoa, and the understanding of the diversification processes, and its timing. The second approach is the question of the impact of the geodynamic events (orogeny, volcanism) on the morphological changes and the diversity dynamics of Palaeozoic fauna (collaboration B. Lefebvre (Univ-Lyon, France), M. Aretz (Univ-Toulouse, France), J. Bohaty (Unv-Cologne, Germany)). I am also concerned by the modeling of the influence of the geodynamic events on the Paleozoic diversification, palaeoclimate and paleobioproductivity. I am particularly interested in factors influencing the P, Mg, and Sr cycles (collaboration with Y. Goddéris, Y. Donnadieu, and G. Le Hir). To validate the model hypotheses, I also try to estimate the Ordovician biomass based on the approximate quantification of phyto- and zooplankton on different paleocontinental margins.

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