From Fensome et al., 2019:
Pseudoceratium distinctum Duxbury, 2001, p.111–112, fig.11, nos.1–4. Holotype: Duxbury, 2001, fig.11, no.1. NOW Circulodinium vectense. Originally Pseudoceratium distinctum, subsequently (and now) Circulodinium vectense. Age: late Aptian.

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