Palaeoperidinium manumcooksonii
From dinoflaj2
"manumcooksonii" (Corradini, 1973, p.176-177, pl.28, figs.4,6) Lentin and Williams, 1976, p.110. Holotype: Corradini, 1973, pl.28, fig.4. Originally Astrocysta, subsequently Palaeoperidinium. Taxonomic senior synonym: Palaeoperidinium cretaceum, according to Lentin and Williams (1976, p.110). Age: Late Cretaceous-Paleocene.
Parent: Palaeoperidinium