Baltisphaeridium spinosum var. deflandrei, (Lejeune-Carpentier, 1941), Downie and Sarjeant, 1965

Now Fibrocysta? deflandrei. Originally Hystrichosphaeridium spinosum var. deflandrei, subsequently Baltisphaeridium spinosum var. deflandrei, thirdly Exochosphaeridium spinosum var. deflandrei, fourthly Exochosphaeridium spinosum ssp. deflandrei, fifthly Exochosphaeridium? spinosum ssp. deflandrei, sixthly (and now) Fibrocysta? deflandrei; see also Cordosphaeridium spinosum var. deflandrei (combination not validly published).

Holotype: Lejeune-Carpentier, 1941, fig.6; Lejeune-Carpentier and Sarjeant, 1981, pl.4, figs.5-6; text-fig.8
Age: Late Cretaceous