MYERS, R. L. Biostratigraphy of the Cardenas formation (upper Cretaceous) San Luis Potosi, México. Paleontología Mexicana, [S. l.], n. 24, p. 1–119, 1968. DOI: 10.22201/igl.05437652e.1968.0.24.265. Disponível em: https://paleontologiamexicana.geologia.unam.mx/index.php/paleontologia/article/view/265. Acesso em: 28 abr. 2025.