Cleistosphaeridium giganteum
From dinoflaj2
"giganteum" (Caro, 1973, p.360-361, pl.2, fig.12) Stover and Evitt, 1978, p.31. Holotype: Caro, 1973, pl.2, fig.12; Fauconnier and Masure, 2004, pl.49, figs.13-14. NOW Exochosphaeridium. Originally Polysphaeridium, subsequently Cleistosphaeridium, thirdly Impletosphaeridium, fourthly (and now) Exochosphaeridium. Age: Early Eocene.
Parent: Cleistosphaeridium
