Pickerill, R.K, J.M Hurst, and F Surlyk. “Notes on Lower Palaeozoic Flysch Trace Fossils from Hall Land and Peary Land, North Greenland”. Rapport Grønlands Geologiske Undersøgelse 108 (December 31, 1982): 25–29. Accessed July 3, 2024. https://geusjournals.org/index.php/rapggu/article/view/7780.