PEEL, J. Early Cambrian microfossils from the Portfjeld Formation, Peary Land, eastern North Greenland. Rapport Grønlands Geologiske Undersøgelse, Copenhagen, Denmark, v. 100, p. 15–18, 1980. DOI: 10.34194/rapggu.v100.7687. Disponível em: https://geusjournals.org/index.php/rapggu/article/view/7687. Acesso em: 5 jul. 2024.