Paléobiodiversité et paléoenvironnements ; CNRS - Université Pierre et Marie Curie - Paris 6 (UPMC)
Department of Palaeontology - Institute of Geology ; Bergakademie Freiberg
Biogéosciences ; Université de Bourgogne (UB) - CNRS
Work partly supported by an ABC-project grant (RBINS; European Community, Access to Research Infrastructure action of the Improving Human Research Potential Programme, 2003) and by the grant Schn 408/7–1 and 2