“DICHOGRAPTUS FASCICULATUS NOV. SP. (GRAPTOLITHINA) EN LA FORMACION GUALCAMAYO (ORDOVICICO), PRECORDILLERADE SAN JUAN, REPUBLICA ARGENTINA”, AMGH, vol. 31, no. 1, pp. 67–71, Dec. 2013, Accessed: Sep. 24, 2025. [Online]. Available: https://ameghiniana.org.ar/index.php/ameghiniana/article/view/2190