Amadori, M. & Amalfitano, J. & Giusbert, L. & Fornaciari, E. & Carnevale, G. & Kriwet, J. (2020)
A revision of the Upper Cretaceous shark Ptychodus mediterraneus Canavari, 1916 from northeastern Italy, with a reassessment of P. latissimus and P. polygyrus Agassiz, 1835 (Chondrichthyes; Elasmobranchii). Cretaceous Research, 110, Article 104386
DOI: 10.1016/j.cretres.2020.104386