Some spores and pollen from the Christopher Formation, (Albian), of Ellef and Amund Ringnes Island, and Northwestern Meville Island, Canadian Arctic Archipelago.
Reference:
Hopkins,W.S. (1974)
Some spores and pollen from the Christopher Formation, (Albian), of Ellef and Amund Ringnes Island, and Northwestern Meville Island, Canadian Arctic Archipelago. Geological Survey of Canada, Paper
Vol. 74 P. 1- 39