“Patagonichnus: A New Trace Fossil from the Miocene of Patagonia. A Probable Fodinichnion of Gregarious Polychaetes”. Ameghiniana 42, no. 2 (April 10, 2013): 277–294. Accessed February 4, 2026. https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/890.