Williams, G.L. and Downie, C.,
1966a
The genus Hystrichokolpoma.
In: Davey, R.J. and Downie, C. and Sarjeant, W.A.S. and Williams, G.L., Studies on Mesozoic and Cainozoic dinoflagellate cysts; Bulletin of the British Museum (Natural History) Geology, Supplement 3, p.176-181.