Subtilisphaera cretacea
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"cretacea" (Pocock, 1962, p.80, pl.14, figs.219–221 ex Davey, 1970, p.359) Jain and Millepied, 1973, p.27. Emendation: Harding, 1990a, p.44, as Palaeoperidinium cretaceum. Holotype: Pocock, 1962, pl.14, fig.219. NOW Palaeoperidinium. Originally Palaeoperidinium (name not validly published), subsequently Astrocysta, thirdly Lejeunia? (combination illegitimate), fourthly Subtilisphaera, fifthly (and now) Palaeoperidinium. Taxonomic junior synonyms: Lejeunia (as Palaeoperidinium) ampla, according to Harker and Sarjeant in Harker et al. (1990, p.128); Astrocysta (as Palaeoperidinium) manumcooksonii, according to Lentin and Williams (1976, p.110). Age: Aptian–Albian.
Parent: Subtilisphaera