Riding, 1994
From dinoflaj2
Riding, J.B., 1994: A taxonomic study of the Mesozoic dinoflagellate cysts Phallocysta elongata (Beju 1971) comb. nov., emend. nov. and Wallodinium cylindricum (Habib 1970) Duxbury 1983 emend. nov. Palynology, v.18, p.11-22, pl.1.
