KORN, Dieter; BOCKWINKEL, Jürgen. The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea). European Journal of Taxonomy, [S. l.], v. 771, n. 1, p. 1–79, 2021. DOI: 10.5852/ejt.2021.771.1503. Disponível em: https://ejt.sandbox.publicknowledgeproject.org/index.php/ejt/article/view/1503. Acesso em: 24 apr. 2026.