The Global Boundary Stratotype Section and Point (GSSP) of the Campanian Stage at Bottaccione (Gubbio, Italy) and its Auxiliary Sections: Seaford Head (UK), Bocieniec (Poland), Postalm (Austria), Smoky Hill, Kansas (U.S.A), Tepayac (Mexico)

Andy Gale, Sietske J. Batenburg, Rodolfo Coccioni, Zofia Dubicka, Elisabetta Erba, Francesca Falzoni, Jim Haggart, Takishi Hasegawa, Christina Ifrim, Ian Jarvis, Hugh C. Jenkyns, Agata Jurowska, Jim Kennedy, Matteo Maron, Giovanni Muttoni, Martin A. Pearce, Maria Rose Petrizzo, Isabella Premoli-Silva, Nicolas Thibault, Silke Voigt, Michael Wagreich, Irek Walaszczyk