SCANNELLA, J. A chasmosaurine ceratopsid premaxilla from the basal sandstone of the Hell Creek Formation, Montana. Vertebrate Anatomy Morphology Palaeontology, [S. l.], v. 8, n. 1, p. 154–169, 2020. DOI: 10.18435/vamp29366. Disponível em: https://journals.library.ualberta.ca/vamp/index.php/VAMP/article/view/29366. Acesso em: 3 oct. 2022.