Wagner, Robert H. «The Extrabasinal Elements in Lower Pennsylvanian Floras of the Maritime Provinces, Canada: Description of Adiantites, Pseudadiantites and Rhacopteridium». Spanish Journal of Palaeontology 16, no. 2 (septiembre 21, 2021): 187–207. Accedido noviembre 24, 2024. https://turia.uv.es/index.php/sjpalaeontology/article/view/21599.