Ineson, Jon R, John S Peel, Sebastian Willman, Elias J Rugen, Martin Sønderholm, and Peter Frykman. “Lithostratigraphy of the Portfjeld Group (Ediacaran – Lowermost Cambrian) of North Greenland”. GEUS Bulletin 57 (October 11, 2024). Accessed October 16, 2024. https://geusbulletin.org/index.php/geusb/article/view/8375.