Impletosphaeridium machaeroides
From dinoflaj2
machaeroides Stover and Hardenbol, 1994, p.36-37, pl.13, figs.91a-b,92a-b. Holotype: Stover and Hardenbol, 1994, pl.13, figs.91a-b. Age: Rupelian.
Parent: Impletosphaeridium