Babcock, L.E. “Systematics and Phylogenetics of Polymeroid Trilobites from the Henson Gletscher and Kap Stanton Formations (Middle Cambrian), North Greenland”. Bulletin Grønlands Geologiske Undersøgelse 169 (January 1, 1994): 79–127. Accessed July 3, 2024. https://geusjournals.org/index.php/bullggu/article/view/6727.