“THE APPEARANCE OF THE GENUS DESHAYESITES (KAZANSKY, 1914, AMMONOIDEA) IN THE LOWERMOST APTIAN (LOWER CRETACEOUS) OF LA BÉDOULE (SE FRANCE)”. RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA 105, no. 2 (July 31, 1999). Accessed July 28, 2026. https://test-ojs-unimi-it.archicoop.it/index.php/RIPS/article/view/5376.