Cyclonephelium semicirculatum
From dinoflaj2
"semicirculatum" Morgenroth, 1966b, p.9-10, pl.2, figs.3-4. Holotype: Morgenroth, 1966b, pl.2, fig.3. NOW Areoligera. Originally Cyclonephelium, subsequently (and now) Areoligera. Age: mid Oligocene.
Parent: Cyclonephelium