The micropalaeontological works of Alcide d'Orbigny

D’Orbigny has created the order of Foraminifera for minute animals classed, at this time, amongst Cephalopoda, and proposed the first classification of this order in 1826, laying the foundations of micropalaeontology. All along his life, he described, figured or clarified diagnosis of about 1500 recent and fossil species. His collections, stored in the National Museum of Natural History in Paris, represent an inestimable patrimony and are still actively consulted. Several micropalaeontologists had contributed to their valorisation and recognised the validity of most of his species. Nowadays, one hundred and two are considered as type species of genera.