Han, Yaojun, and Ron K. Pickerill. “Palichnology of the Lower Devonian Wapske Formation, Perth-Andover-Mount Carleton Region, Northwestern New Brunswick, Eastern Canada”. Atlantic Geoscience 30, no. 3 (November 1, 1994). Accessed May 5, 2024. https://journals.lib.unb.ca/index.php/ag/article/view/2131.