Filisphaeridium stimuliferum (Deflandre, 1939a, p.192, pl.10, fig.10) Cramer and Diez, 1979, p.52.

Combination not validly published: basionym not fully referenced.
NOW Solisphaeridium. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly (and now) Solisphaeridium, fourthly Filisphaeridium (combination not validly published), fifthly Micrhystridium.

Holotype: Deflandre, 1939a, pl.10, fig.10.
Age: Late Jurassic.