REDESCRIPTION OF CROSSVALLIA UNIENWILLIA - THE ONLY PALEOCENE ANTARCTIC PENGUIN. Ameghiniana, [S. l.], v. 50, n. 6, p. 545–553, 2013. DOI: 10.5710/AMGH.09.10.2013.1058. Disponível em: https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1058. Acesso em: 10 sep. 2025.