GRAPTOLITE-TRILOBITE BIOSTRATIGRAPHY IN THE SANTA VICTORIA AREA, NORTHWESTERN ARGENTINA. A KEY FOR REGIONAL AND WORLDWIDE CORRELATION OF THE LOWER ORDOVICIAN (TREMADOCIAN–FLOIAN). AMGH. 2015;52(5):535–557. Accessed September 29, 2025. https://ameghiniana.org.ar/index.php/ameghiniana/article/view/2905