“LOS POLYMORPHINAE, UN DIFERENTE TIPO ADAPTATIVO DE LOS PROTEROTHERIIDAE (MAMMALIA. LITOPTERNA)”. Ameghiniana 6, no. 1 (August 13, 2013): 57–64. Accessed January 31, 2026. https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1272.