“Biogeography and Biofacies Patterns of Middle Cambrian Polymeroid Trilobites from North Greenland: Palaeogeographic and Palaeo-Oceanographic Implications”. Bulletin Grønlands Geologiske Undersøgelse 169 (January 1, 1994): 129–147. Accessed October 21, 2025. https://geusjournals.org/index.php/bullggu/article/view/6728.