Dinoflagellate Cysts and acritarchs from the Upper Vardekløft Formation <Jurassic> of Jameson Land, East Greenland With a Suppl.: Pollen grains and spores from the Upper Vardekløft Formation <Jurassic> Jameson Land, East Greenland by Marjorie D. Muir - Sarjeant, William Anthony Swithin (Reitzel, 1972)