MACHALSKI , Marcin; BITNER , Maria Aleksandra. The brachiopod assemblage from the Maastrichtian white chalk at Chełm, eastern Poland: stratigraphical and palaeoecological implications. Netherlands Journal of Geosciences, [S. l.], v. 103, 2024. DOI: 10.1017/njg.2023.15. Disponível em: https://njgjournal.nl/index.php/njg/article/view/11067. Acesso em: 12 nov. 2026.