Litosphaeridium serratocyclum (Wetzel, 1933b, p.27-28, pl.4, fig.9) Sarjeant, 1985b, p.144-145. Emendation: Sarjeant, 1985b, p.144-145, as Litosphaeridium serratocyclus.

Holotype: Wetzel, 1933b, pl.4, fig.9; Sarjeant, 1985b, pl.1, fig.6.
Originally Cymatiosphaera radiata forma serratocycla (Appendix A), subsequently (and now) Litosphaeridium serratocyclum.
Age: Late Cretaceous.