Biogeography and biofacies patterns of Middle Cambrian polymeroid trilobites from North Greenland: palaeogeographic and palaeo-oceanographic implications. bullggu [Internet]. 1994 Jan. 1 [cited 2025 Oct. 21];169:129-47. Available from: https://geusjournals.org/index.php/bullggu/article/view/6728