Solisphaeridium stimuliferum (Deflandre, 1938) Pocock, 1972

Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Acritarch), thirdly (and now) Solisphaeridium, fourthly Filisphaeridium (combination not validly published, Acritarch), fifthly Micrhystridium (Acritarch). Moczydłowska (1998, p.98) retained this species in Solisphaeridium.

Holotype: Deflandre, 1938, pl.10, fig.10
Age: Late Jurassic