Baltisphaeridium flosculus, (Deflandre, 1937), Downie and Sarjeant, 1963

Now Florentinia?. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (combination not validly published), thirdly Litosphaeridium?, fourthly Silicisphaera?, fifthly (and now) Florentinia?.
Combination not validly published since Downie and Sarjeant, 1963 did not fully reference the basionym.

Holotype: Deflandre, 1937, pl.15 [al. pl.12], fig.5
Age: Cretaceous (Senonian)