Dalhoff, F. ., Os Vigran, J. . and Stemmerik, L. . (2000) “Stratigraphy and palynology of the Lower Carboniferous Sortebakker Formation, Wandel Sea Basin, eastern North Greenland”, Geology of Greenland Survey Bulletin, 187, pp. 51–63. doi: 10.34194/ggub.v187.5194.