Calder JH, Baird D, Urdang EB. On the discovery of tetrapod trackways from Permo-Carboniferous redbeds of Prince Edward Island and their biostratigraphic significance. atlgeo [Internet]. 2004 Oct. 10 [cited 2024 Apr. 23];40(2/3). Available from: https://journals.lib.unb.ca/index.php/ag/article/view/1041