Baltisphaeridium striolatum, (Deflandre, 1937), Downie and Sarjeant, 1965

Now Coronifera. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Exochosphaeridium, fourthly (and now) Coronifera. This combination was not validly published in Downie and Sarjeant, 1963 since these authors did not fully reference the basionym.

Holotype: Deflandre, 1937, pl.15 [al. pl.12], fig.1
Age: Late Cretaceous