ARMSTRONG, H. Conodonts from the Upper Ordovician – Lower Silurian carbonate platform of North Greenland. Bulletin Grønlands Geologiske Undersøgelse, Copenhagen, Denmark, v. 159, p. 1–151, 1990. DOI: 10.34194/bullggu.v159.6709. Disponível em: https://geusjournals.org/index.php/bullggu/article/view/6709. Acesso em: 12 may. 2024.