“PALAEONTOLOGY AND BIOSTRATIGRAPHY OF THE LATE PALAEOZOIC COPACABANA GROUP AT THE ANGOSTO DEL BEU, BOLIVIA”, AMGH, vol. 35, no. 1, pp. 87–96, Feb. 2014, Accessed: Oct. 19, 2025. [Online]. Available: https://ameghiniana.org.ar/index.php/ameghiniana/article/view/2417