“GRAPTOLITE-TRILOBITE BIOSTRATIGRAPHY IN THE SANTA VICTORIA AREA, NORTHWESTERN ARGENTINA. A KEY FOR REGIONAL AND WORLDWIDE CORRELATION OF THE LOWER ORDOVICIAN (TREMADOCIAN–FLOIAN)”. Ameghiniana 52, no. 5 (June 17, 2015): 535–557. Accessed September 29, 2025. https://ameghiniana.org.ar/index.php/ameghiniana/article/view/2905.