RASMUSSEN, Jan Audun; ERIKSSON, Mats E.; LINDSKOG, Anders. Middle Ordovician Drepanoistodus (Vertebrata, Conodonta) from Baltica, with description of three new species. European Journal of Taxonomy, [S. l.], v. 774, n. 1, p. 106–134, 2021. DOI: 10.5852/ejt.2021.774.1533. Disponível em: https://ejt.sandbox.publicknowledgeproject.org/index.php/ejt/article/view/1533. Acesso em: 24 apr. 2026.