GRAPTOLITE-TRILOBITE BIOSTRATIGRAPHY IN THE SANTA VICTORIA AREA, NORTHWESTERN ARGENTINA. A KEY FOR REGIONAL AND WORLDWIDE CORRELATION OF THE LOWER ORDOVICIAN (TREMADOCIAN–FLOIAN). Ameghiniana, [S. l.], v. 52, n. 5, p. 535–557, 2015. Disponível em: https://ameghiniana.org.ar/index.php/ameghiniana/article/view/2905. Acesso em: 28 sep. 2025.