“Femur of a Monotreme (Mammalia, Monotremata) from the Early Paleocene Salamanca Formation of Patagonia, Argentina”. Ameghiniana 40, no. 4 (April 22, 2013): 625–630. Accessed September 24, 2025. https://ameghiniana.org.ar/index.php/ameghiniana/article/view/990.