REEVALUATION OF TETRAGRAPTUS PHYLLOGRAPTOIDES AND T. AKZHARENSIS BIOZONES (LOWER ORDOVICIAN, FLOIAN) FROM THE CORDILLERA ORIENTAL ARGENTINA. Ameghiniana, [S. l.], v. 50, n. 3, p. 287 – 297, 2013. Disponível em: https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/541. Acesso em: 11 sep. 2025.