[1]
“SOBRE LA PRESENCIA DE ZYGOGRAPTUS SP. (GRAPTOLITHINA) EN LA FORMACION DE GUALCAMAYO, ORDOVICICO DE SAN JUAN - LA RIOJA”, AMGH, vol. 10, no. 2, pp. 191–195, Aug. 2013, Accessed: Jan. 31, 2026. [Online]. Available: https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1411