Lane, P.D, and A.W.A Rushton. “A Problematical Trilobite from the Lower Cambrian of Freuchen Land, Central North Greenland”. Rapport Grønlands Geologiske Undersøgelse 154 (January 1, 1992): 5–12. Accessed November 27, 2024. https://geusjournals.org/index.php/rapggu/article/view/8165.