Trithyrodinium pentagonum

"pentagonum" May, 1980, p.87–88, pl.10, figs.13–14.  Holotype: May, 1980, pl.10, figs.13–14.  NOW Pierceites.  Originally Trithyrodinium, subsequently (and now) Pierceites.  Age: early Maastrichtian.

Parent: Trithyrodinium