“UN AMONITE HETEROMORFO (SPIROCERATIDAE) DEL BAYOCIANO SUPERIOR DEL PASO DEL ESPINACITO, SAN JUAN, ARGENTINA”. Ameghiniana 30, no. 2 (December 16, 2013): 129–134. Accessed December 20, 2025. https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/2145.