GETTY, P. R.; SPROULE, R.; STIMSON, M. R.; LYONS, P. C. Invertebrate trace fossils from the Pennsylvanian Rhode Island Formation of Massachusetts, USA. Atlantic Geoscience, [S. l.], v. 53, p. 185–206, 2017. DOI: 10.4138/atlgeol.2017.007. Disponível em: https://journals.lib.unb.ca/index.php/ag/article/view/25303. Acesso em: 5 dec. 2022.