Dapsilidinium belgicum
From dinoflaj3
"?belgicum" (Sarjeant, 1969, p.15) Lentin and Williams, 1981, p.69. Holotype: Pastiels, 1948, pl.3, fig.16, as Hystrichosphaeridium fluctuans, lost according to Sarjeant (1986, p.18). NOW Polysphaeridium. Originally (and now) Polysphaeridium, subsequently Polysphaeridium?, thirdly Dapsilidinium?. Questionable assignment: Lentin and Williams (1981, p.69). Age: early Eocene.
Parent: Dapsilidinium