NAVAS-PAREJO, Pilar. Carboniferous biostratigraphy of Sonora: a review. Revista Mexicana de Ciencias Geológicas, [S. l.], v. 35, n. 1, p. 41–53, 2018. DOI: 10.22201/cgeo.20072902e.2018.1.571. Disponível em: https://rmcg.unam.mx/index.php/rmcg/article/view/571. Acesso em: 14 mar. 2025.