BIRKELUND, Tove. Ammonites from the Upper Cretaceous of West Greenland. Meddelelser om Grønland, [S. l.], v. 179, n. 7, p. 290 pp., 1965. Disponível em: https://tidsskrift.dk/meddrgroenland/article/view/155278. Acesso em: 28 dec. 2025.