Davey and Williams, 1969
From dinoflaj2
Davey, R.J. and Williams, G.L., 1969: Generic reallocations. In: Davey, R.J., Downie, C., Sarjeant, W.A.S. and Williams, G.L., Appendix to "Studies on Mesozoic and Cainozoic dinoflagellate cysts"; British Museum (Natural History) Geology, Bulletin, Appendix to Supplement 3, p.4-7.