EL GENERO AMPHIGRAPTUS LAPWORTH (GRAPTOLITHINA) EN EL ORDOVICICO ARGENTINO. Ameghiniana, [S. l.], v. 16, n. 1-2, p. 1–8, 2013. Disponível em: https://ameghiniana.org.ar/index.php/ameghiniana/article/view/1576. Acesso em: 22 sep. 2025.