D’Orbigny was more interested in the discontinuities of life history than in the origin of species. He looked for reference points to correlate geological strata and to reconstruct their history. This allowed him to formalise the concept of stratigraphic stage and to propose the first geological time scale. Therefore, one of the results was that he was unjustly considered as one of the leaders of the creationism school, because he used the ambiguous term ‘creation’ to designate the renewal of fauna after catastrophic events, but without providing a definition and with a meaning that was probably different from those of his successors.
d’Orbigny, biostratigraphy, catastrophism