Mangerud, Gunn, Niall W. Paterson, and Jonathan Bujak. “Triassic Palynoevents in the Circum-Arctic Region”. Atlantic Geology 57, no. 1 (March 14, 2021): 071–101. Accessed October 17, 2021. https://journals.lib.unb.ca/index.php/ag/article/view/31625.