“THE CALLOVIAN-OXFORDIAN BOUNDARY IN BRITAIN: A REVIEW OF KEY SECTIONS AND THEIR CORRELATION WITH THE PROPOSED GLOBAL STRATOTYPE SECTION AND POINT FOR THE OXFORDIAN IN HAUTE PROVENCE, FRANCE”. 2004. RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA 110 (1). https://doi.org/10.13130/2039-4942/6288.