ÉNAY, R.; HOWARTH, M. K. The Upper Oxfordian and Lower Kimmeridgian ammonite genera Idoceras Burckhardt, 1906, and Subnebrodites Spath, 1925. Paleontological Contributions, [S. l.], n. 17, p. 1–3, 2017. DOI: 10.17161/1808.23377. Disponível em: https://journals.ku.edu/paleocontributions/article/view/20300. Acesso em: 7 dec. 2023.