Amphorosphaeridium bipolare

"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