UN AMONITE HETEROMORFO (SPIROCERATIDAE) DEL BAYOCIANO SUPERIOR DEL PASO DEL ESPINACITO, SAN JUAN, ARGENTINA. AMGH [Internet]. 2013 Dec. 16 [cited 2025 Oct. 17];30(2):129-34. Available from: https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/2145