Cordosphaeridium bipolare
From dinoflaj3
"bipolare" Cookson and Eisenack, 1965b, p.135, pl.16, figs.7–8. Holotype: Cookson and Eisenack, 1965b, pl.16, fig.8. NOW Fibrocysta. Originally Cordosphaeridium, subsequently Lanternosphaeridium, thirdly Amphorosphaeridium, fourthly (and now) Fibrocysta. Age: early Eocene.
Parent: Cordosphaeridium