Sardella, R., G. Di Stefano, and C. Petronio , trans. “The Villafranchian Mammal Faunas from the Tiber River Basin (Umbria, Central Italy)”. Alpine and Mediterranean Quaternary 8, no. 2 (December 1, 1994): 509–514. Accessed July 16, 2024. https://amq.aiqua.it/index.php/amq/article/view/914.