Tityrosphaeridium biarmatum
From dinoflaj3
"?biarmatum" (Morgenroth, 1966a, p.21, pl.4, figs.6–7) Sarjeant, 1981, p.121. Holotype: Morgenroth, 1966a, pl.4, figs.6–7. NOW Cordosphaeridium. Originally (and now) Cordosphaeridium, subsequently Tityrosphaeridium?. Questionable assignment: Sarjeant (1981, p.121). Age: early Eocene.
Parent: Tityrosphaeridium