Astrocysta cretacea

"*cretacea" Pocock, 1962, p.80, pl.14, figs.219–221 ex Davey, 1970, p.359.  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); and Astrocysta (subsequently Palaeoperidinium) manumcooksonii, according to Lentin and Williams (1976, p.110).  The name Palaeoperidinium cretaceum was not validly published in Pocock (1962) since the generic name Palaeoperidinium was not validly published until 1967.  The name Astrocysta cretacea was not validly published in Sarjeant (1967b, p.243) since the generic name Astrocysta was not validly published until 1970.  Davey (1970, p.359), while validating this name, proposed an "emended diagnosis".  Age: Albian–Aptian.

Parent: Astrocysta