Fibrocysta essentialis

essentialis (de Coninck, 1969, p.38, pl.11, figs.7–8) Brinkhuis and Zachariasse, 1988, p.187.  Holotype: de Coninck, 1969, pl.11, figs.7–8.  Originally Lanternosphaeridium, subsequently Kenleyia?, thirdly (and now) Fibrocysta.  Age: early Eocene.

Parent: Fibrocysta