Quarrying stone containing fossils from the Jurassic period at Langrune, Normandy, France, 1905 (colour litho)

Illustration from the 'Ages of the Earth' ('Les Ages de la Terre') series issued as promotional cards by Chocolat D'Aiguebelle; the Jurassic period was the second and middle period of the Mesozoic Era, from about 208 to 144 million years ago; the Chocolaterie d'Aiguebelle was established in 1869 by Trappist monks at their abbey of Aiguebelle in the Drôme area; between 1893 and 1895 a factory was built in the nearby town of Donzère and became an important supplier of chocolate products until 1978, when production ceased and the factory closed; however a branch had been established in 1942 in Morocco and as the Compagnie Chérifienne de Chocolaterie continues today to make chocolates under the brand name of Aiguebelle; the promotional trade cards produced by Aiguebelle in the late 19th and early 20th century were of exceptional quality;