Elise Nardin
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.
Address: UMR 5563 CNRS Géosciences Environnement Toulouse, Observatoire Midi-Pyrénées, 14 avenue Edouard Belin, F31400 Toulouse
Address: UMR 5563 CNRS Géosciences Environnement Toulouse, Observatoire Midi-Pyrénées, 14 avenue Edouard Belin, F31400 Toulouse
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Papers by Elise Nardin
of the very few Konservat-Lagerstätten known so far in the world to have yielded
numerous remains of Late Ordovician softbodied fossils associated with an abundant and diverse marine benthic fauna. This locality has also yielded several levels (starfish beds) extremely rich in exquisitely preserved echinoderms. Their remarkable preservation possibly results from the rapid, in situ burial of large, particularly dense, living communities (echinoderm meadows) by storm deposits. The Bou Nemrou starfish beds are dominated by eocrinoids and stylophorans, associated with crinoids, cyclocystoids, edrioasteroids, and ophiuroids. This composition is typical of the cool assemblages of the Mediterranean Province. The Bou Nemrou starfish beds may result from the opportunistic colonisation of the sea-floor by dense populations of echinoderms, during short phases of environmental disturbance.
of the very few Konservat-Lagerstätten known so far in the world to have yielded
numerous remains of Late Ordovician softbodied fossils associated with an abundant and diverse marine benthic fauna. This locality has also yielded several levels (starfish beds) extremely rich in exquisitely preserved echinoderms. Their remarkable preservation possibly results from the rapid, in situ burial of large, particularly dense, living communities (echinoderm meadows) by storm deposits. The Bou Nemrou starfish beds are dominated by eocrinoids and stylophorans, associated with crinoids, cyclocystoids, edrioasteroids, and ophiuroids. This composition is typical of the cool assemblages of the Mediterranean Province. The Bou Nemrou starfish beds may result from the opportunistic colonisation of the sea-floor by dense populations of echinoderms, during short phases of environmental disturbance.