Solisphaeridium claviculorum (Deflandre, 1938) Sarjeant, 1968; emend. Sarjeant, 1968

Originally Hystrichosphaeridium, subsequently Baltisphaeridium (an acritarch genus), thirdly (and now) Solisphaeridium.
Holotype: Deflandre, 1938, pl.10, fig.4
Age: Late Jurassic