Bird tracks preserved in fluvial channel facies of the Río Negro Formation (Neogene), La Pampa Province,Argentina. Ameghiniana, [S. l.], v. 46, n. 1, p. 209–214, 2009. Disponível em: https://ameghiniana.org.ar/index.php/ameghiniana/article/view/187. Acesso em: 7 oct. 2025.