Baltisphaeridium dictyophorum, (Cookson and Eisenack, 1958), Downie and Sarjeant, 1965

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

Holotype: Cookson and Eisenack, 1958, pl.11, fig.14
Age: Late Jurassic