CANTÚ-CHAPA, A. The suture line patterns in Olcostephanidae and Spiticeratidae, ammonites of the upper Jurassic-Lower Cretaceous: systematic considerations. Paleontología Mexicana, [S. l.], v. 1, n. 1, p. 58–72, 2012. DOI: 10.22201/igl.05437652e.2012.1.1.129. Disponível em: https://paleontologiamexicana.geologia.unam.mx/index.php/paleontologia/article/view/129. Acesso em: 14 mar. 2025.