Limbicysta bjaerkei (Smelror, 1987, p.227,230, figs.4G,8C–D; text-fig.9) MacRae et al., 1996, p.1481. Emendation: Bailey and Hogg, 1995, p.58, as Fentonia bjaerkei.

Originally Parvocysta, subsequently Fentonia, thirdly (and now) Limbicysta (acritarch), fourthly Neofentonia (generic name illegitimate; acritarch).

Holotype: Smelror, 1987, fig.4G.
Age: late Callovian.