Oligosphaeridium prolixispinosum
From dinoflaj3
prolixispinosum Davey and Williams, 1966b, p.76–77, pl.8, figs.2–3. Holotype: Davey and Williams, 1966b, pl.8, fig.3; Fauconnier and Masure, 2004, pl.60, figs.2–4. Originally (and now) Oligosphaeridium, subsequently Tanyosphaeridium. Lentin and Williams (1981, p.201) retained this species in Oligosphaeridium. Age: Cenomanian.
