Duxbury, 1983
From dinoflaj2
Duxbury, S., 1983: A study of dinoflagellate cysts and acritarchs from the Lower Greensand (Aptian to Lower Albian) of the Isle of Wight, southern England. Palaeontographica, Abteilung B, v.186, no.1-3, p.18-80, pl.1-10.