Palaeohystrichophora isodiametrica
From dinoflaj2
"isodiametrica" Cookson and Eisenack, 1958, p.38, pl.12, figs.11-12. Holotype: Cookson and Eisenack, 1958, pl.12, figs.11-12. NOW Hystrichodinium. Originally Palaeohystrichophora, subsequently (and now) Hystrichodinium. Age: Campanian-Early Maastrichtian.
Parent: Palaeohystrichophora