May, 1980
From dinoflaj3
May, F.E., 1980: Dinoflagellate cysts of the Gymnodiniaceae, Peridiniaceae, and Gonyaulacaceae from the Upper Cretaceous Monmouth Group, Atlantic Highlands, New Jersey. Palaeontographica, Abteilung B, v.172, p.10-116, pl.1-23.