“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). doi:10.13130/2039-4942/6288.