PAUL, C. The cystoid Pleurocystites (Echinodermata) from the Ordovician of North Greenland. Rapport Grønlands Geologiske Undersøgelse, Copenhagen, Denmark, v. 91, p. 83–86, 1979. DOI: 10.34194/rapggu.v91.7623. Disponível em: https://geusjournals.org/index.php/rapggu/article/view/7623. Acesso em: 3 jul. 2024.