Amphorosphaeridium bipolare
From dinoflaj2
"bipolare" (Cookson and Eisenack, 1965b, p.135, pl.16, figs.7-8) Davey, 1969c, p.35. 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: Amphorosphaeridium