Harland, 1979a
From dinoflaj3
Harland, R., 1979a: Agerasphaera nov. gen., an 'Eisenackia'-like dinoflagellate cyst from the Thanet Sands (Paleocene) of southeast England. Review of Palaeobotany and Palynology, v.28, p.27-35, pl.1-2.