Alcide D'Orbigny - 1840 and Later

1840 and Later

In 1840, d'Orbigny started the methodical description of French fossils and published La Paléontologie Française (8 vols). In 1849 he published a closely related Prodrome de Paléontologie Stratigraphique, intended as a "Preface to Stratigraphic Palaeontology", in which he described almost 18,000 species, and with biostratigraphical comparisons erected geological stages, the definitions of which rest on their stratotypes.

In 1853 he became professor of palaeontology at the Paris Muséum National d'Histoire Naturelle, publishing his Cours élémentaire that related paleontology to zoology, as a science independent of the uses made of it in stratigraphy. The chair of paleontology was created especially in his honor. The d’Orbigny collection is housed in the Salle d'Orbigny and is often visited by experts.

He described as first the geological timescales and defined numerous geological strata, still used today as chronostratigraphic reference such as Toarcian, Callovian, Oxfordian, Kimmeridgian, Aptian, Albian and Cenomanian. He died in the small town of Pierrefitte-sur-Seine, near Paris.