FILLION, D.; PICKERILL, R. K. Systematic ichnology of the Middle Ordovician Trenton Group, St Lawrence Lowland, eastern Canada. Atlantic Geoscience, [S. l.], v. 20, n. 1, 1984. DOI: 10.4138/1572. Disponível em: https://journals.lib.unb.ca/index.php/ag/article/view/1572. Acesso em: 28 mar. 2024.