Bujak, J.P., Downie, C., Eaton, G.L. and Williams, G.L.,
1980b
Taxonomy of some Eocene dinoflagellate cyst species from southern England.
In: Bujak, J.P., Downie, C., Eaton, G.L. and Williams, G.L., Dinoflagellate Cysts and Acritarchs from the Eocene of Southern England. Special Papers in Palaeontology, 24:26-36, pl. 1-22.