SWEET, Natalie L.; NARBONNE, Guy M. Occurrence of the Cambrian trace fossil Oldhamia in southern Québec. Atlantic Geoscience, [S. l.], v. 29, n. 1, 1993. DOI: 10.4138/1991. Disponível em: https://journals.lib.unb.ca/index.php/ag/article/view/1991. Acesso em: 29 mar. 2024.