A GUIDE-LEVEL OF THE UPPERMOST HAUTERIVIAN (LOWER CRETACEOUS) IN THE PELAGIC SUCCESSION OF UMBRIA-MARCHE APENNINES (CENTRAL ITALY): THE FARAONI LEVEL. (1993). RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA , 99(4). https://doi.org/10.13130/2039-4942/8897