Polysphaeridium ornamentum
From dinoflaj3
"ornamentum" Jain and Tandon, 1981, p.12–13, pl.2, fig.35. Holotype: Jain and Tandon, 1981, pl.2, fig.35. NOW Operculodinium. Originally Polysphaeridium, subsequently (and now) Operculodinium. Age: middle Eocene.
Parent: Polysphaeridium