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Cribroperidinium parorthoceras
From Fensome et al., 2019:
Cribroperidinium parorthoceras (Davey, 1968, p.1) Helenes, 1984, p.130. Holotype: Sarjeant, 1966b, pl.14, figs.5–6; text-fig.29, as Gonyaulacysta orthoceras; Jan du Chêne et al., 1986a, pl.26, figs.6–8. Originally Gonyaulacysta, subsequently Millioudodinium, thirdly (and now) Cribroperidinium?. Questionable assignment: Helenes (1984, p.130). Age: late Barremian.
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Original diagnosis: Davey, 1968, p.1: Gonyaulacysta parorthoceras
Shell ovoidal with strong, tapering apical horn accounting for about one-fifth to one quater of overall length. Shell wall of moderate thickness, granular to tuberculate. Tabulation 4", 1a, 6"", ?6c, 7""", 1p, 1""""; crests low, bearing small spinelets. Cingulum strongly spiral, of moderate breadyh: sulcus broad and extending to antapex.
Cribroperidinium parorthoceras (Davey, 1968, p.1) Helenes, 1984, p.130. Holotype: Sarjeant, 1966b, pl.14, figs.5–6; text-fig.29, as Gonyaulacysta orthoceras; Jan du Chêne et al., 1986a, pl.26, figs.6–8. Originally Gonyaulacysta, subsequently Millioudodinium, thirdly (and now) Cribroperidinium?. Questionable assignment: Helenes (1984, p.130). Age: late Barremian.
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Original diagnosis: Davey, 1968, p.1: Gonyaulacysta parorthoceras
Shell ovoidal with strong, tapering apical horn accounting for about one-fifth to one quater of overall length. Shell wall of moderate thickness, granular to tuberculate. Tabulation 4", 1a, 6"", ?6c, 7""", 1p, 1""""; crests low, bearing small spinelets. Cingulum strongly spiral, of moderate breadyh: sulcus broad and extending to antapex.